Номер 710, страница 174 - гдз по геометрии 9 класс учебник Мерзляк, Полонский

Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета

Авторы: Мерзляк А. Г., Полонский В. Б., Якир М. С.

Тип: Учебник

Издательство: Просвещение, Вентана-граф

Год издания: 2019 - 2026

Цвет обложки: оранжевый, зелёный

ISBN: 978-5-09-104934-3

Допущено Министерством просвещения Российской Федерации

Глава 5. Геометрические преобразования. Параграф 19. Центральная симметрия. Поворот. Упражнения - номер 710, страница 174.

App\Models\Task {#1030 // resources/views/models/task/default.blade.php
  #connection: "mysql"
  #table: "tasks"
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    "field_display_title" => "710"
    "field_outside_task" => null
    "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037
      #items: array:1 [
        0 => App\Models\Term {#1036
          #connection: "mysql"
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                          #connection: "mysql"
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                            "created_at" => "2026-04-10 13:58:26"
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                        0 => App\Models\Term {#1055
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                        1 => App\Models\Term {#1056
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
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                            "created_at" => "2026-04-10 13:58:26"
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                    "field_author" => Illuminate\Database\Eloquent\Collection {#1057
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                        0 => App\Models\Term {#1058
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                        1 => App\Models\Term {#1059
                          #connection: "mysql"
                          #table: "terms"
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                        2 => App\Models\Term {#1060
                          #connection: "mysql"
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                             …11
                          ]
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            "book" => Illuminate\Database\Eloquent\Collection {#1085}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1083}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "parent_branches" => Illuminate\Database\Eloquent\Collection {#1196
      #items: array:3 [
        0 => App\Models\Branch {#1206
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 656564
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Геометрические преобразования"
            "field_branch_order" => "5"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1207
              #items: array:1 [
                0 => App\Models\Term {#1047}
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "150"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1208
              #items: array:1 [
                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1209
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 656564
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Геометрические преобразования"
            "field_branch_order" => "5"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1207}
            "field_page_start" => "150"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1208}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1209}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1210
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 656571
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Центральная симметрия. Поворот"
            "field_branch_order" => "19"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1214
              #items: array:1 [
                0 => App\Models\Term {#1211
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #original: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => null
                    "field_short_name" => "§"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "166"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1213
              #items: array:1 [
                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1212
              #items: array:1 [
                0 => App\Models\Branch {#1045}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 656571
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Центральная симметрия. Поворот"
            "field_branch_order" => "19"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1214}
            "field_page_start" => "166"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1213}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1212}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Branch {#1215
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 656573
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Упражнения"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1216
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "172"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1217
              #items: array:1 [
                0 => App\Models\Book {#1049}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1298
              #items: array:1 [
                0 => App\Models\Branch {#1218
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 656571
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Центральная симметрия. Поворот"
                    "field_branch_order" => "19"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1220 …2}
                    "field_page_start" => "166"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1221 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1256 …2}
                  ]
                  #original: array:24 [
                    "id" => 656571
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Центральная симметрия. Поворот"
                    "field_branch_order" => "19"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1220 …2}
                    "field_page_start" => "166"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1221 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1256 …2}
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 656573
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Упражнения"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1216}
            "field_page_start" => "172"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
            "field_branch_title_in_content" => "0"
            "field_navigation_title" => null
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_branch_cover" => []
            "field_branch_covers" => []
            "book" => Illuminate\Database\Eloquent\Collection {#1217}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1298}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1155
      #items: array:5 [
        0 => App\Models\Element {#1180
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:7 [
            "id" => 813662
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1171
              #items: array:1 [
                0 => App\Models\Edition {#1179
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1702
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1175 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "margarita"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1176 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1173 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1174 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1702
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1175 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => null
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "margarita"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1176 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1173 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1174 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "657506"
              "type" => "task"
            ]
            "text" => "<p>является сама эта прямая.</p><p>710. Точки $A (x; -2)$ и $B (1; y)$ симметричны относительно:</p><p><strong>1)</strong> начала координат;</p><p><strong>2)</strong> точки $M (-1; 3)$.</p><p>Найдите $x$ и $y$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "710-1.png"
                "alt" => null
                "width" => "607"
                "height" => 94
                "path" => "/media/geometrija_09/merzlyak/0-00/710-1.webp?ts=1738828653"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 813662
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1171}
            "task" => array:2 [
              "refs" => "657506"
              "type" => "task"
            ]
            "text" => "<p>является сама эта прямая.</p><p>710. Точки $A (x; -2)$ и $B (1; y)$ симметричны относительно:</p><p><strong>1)</strong> начала координат;</p><p><strong>2)</strong> точки $M (-1; 3)$.</p><p>Найдите $x$ и $y$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "710-1.png"
                "alt" => null
                "width" => "607"
                "height" => 94
                "path" => "/media/geometrija_09/merzlyak/0-00/710-1.webp?ts=1738828653"
              ]
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1163
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 814750
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1153
              #items: array:1 [
                0 => App\Models\Edition {#1164
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 1703
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 1"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1157 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "image"
                    "field_page_content_mode" => ""
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Неизвестный"
                    "field_moderator" => "anna"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "1-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1158 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1120 …2}
                    "field_process_formula" => ""
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1121 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 1703
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 1"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1157 …2}
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            "text" => "<p><strong>1) начала координат</strong></p><p>Две точки симметричны относительно начала координат, если начало координат является серединой отрезка, соединяющего эти точки. Координаты середины отрезка $AB$ с концами в точках $A(x_A; y_A)$ и $B(x_B; y_B)$ вычисляются по формулам: <br> $x_{сер} = \frac{x_A + x_B}{2}$ <br> $y_{сер} = \frac{y_A + y_B}{2}$</p><p>В данном случае точки $A(x; -2)$ и $B(1; y)$ симметричны относительно начала координат $O(0; 0)$. Следовательно, координаты точки $O$ являются средним арифметическим соответствующих координат точек $A$ и $B$.</p><p>Составим уравнения для каждой координаты: <br> Для абсциссы: $0 = \frac{x + 1}{2}$ <br> Для ординаты: $0 = \frac{-2 + y}{2}$</p><p>Решим первое уравнение относительно $x$: <br> $x + 1 = 0 \cdot 2$ <br> $x + 1 = 0$ <br> $x = -1$</p><p>Решим второе уравнение относительно $y$: <br> $-2 + y = 0 \cdot 2$ <br> $-2 + y = 0$ <br> $y = 2$</p><p>Ответ: $x = -1$, $y = 2$.</p><p><strong>2) точки M (-1; 3)</strong></p><p>Если точки $A$ и $B$ симметричны относительно точки $M$, то $M$ является серединой отрезка $AB$.</p><p>Используем те же формулы для координат середины отрезка, где в качестве середины выступает точка $M(-1; 3)$.</p><p>Составим уравнения для координат: <br> Для абсциссы: $-1 = \frac{x + 1}{2}$ <br> Для ординаты: $3 = \frac{-2 + y}{2}$</p><p>Решим первое уравнение относительно $x$: <br> $x + 1 = -1 \cdot 2$ <br> $x + 1 = -2$ <br> $x = -2 - 1$ <br> $x = -3$</p><p>Решим второе уравнение относительно $y$: <br> $-2 + y = 3 \cdot 2$ <br> $-2 + y = 6$ <br> $y = 6 + 2$ <br> $y = 8$</p><p>Ответ: $x = -3$, $y = 8$.</p>"
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            "text" => "<p><strong>1) начала координат</strong></p><p>Две точки симметричны относительно начала координат, если начало координат является серединой отрезка, соединяющего эти точки. Координаты середины отрезка $AB$ с концами в точках $A(x_A; y_A)$ и $B(x_B; y_B)$ вычисляются по формулам: <br> $x_{сер} = \frac{x_A + x_B}{2}$ <br> $y_{сер} = \frac{y_A + y_B}{2}$</p><p>В данном случае точки $A(x; -2)$ и $B(1; y)$ симметричны относительно начала координат $O(0; 0)$. Следовательно, координаты точки $O$ являются средним арифметическим соответствующих координат точек $A$ и $B$.</p><p>Составим уравнения для каждой координаты: <br> Для абсциссы: $0 = \frac{x + 1}{2}$ <br> Для ординаты: $0 = \frac{-2 + y}{2}$</p><p>Решим первое уравнение относительно $x$: <br> $x + 1 = 0 \cdot 2$ <br> $x + 1 = 0$ <br> $x = -1$</p><p>Решим второе уравнение относительно $y$: <br> $-2 + y = 0 \cdot 2$ <br> $-2 + y = 0$ <br> $y = 2$</p><p>Ответ: $x = -1$, $y = 2$.</p><p><strong>2) точки M (-1; 3)</strong></p><p>Если точки $A$ и $B$ симметричны относительно точки $M$, то $M$ является серединой отрезка $AB$.</p><p>Используем те же формулы для координат середины отрезка, где в качестве середины выступает точка $M(-1; 3)$.</p><p>Составим уравнения для координат: <br> Для абсциссы: $-1 = \frac{x + 1}{2}$ <br> Для ординаты: $3 = \frac{-2 + y}{2}$</p><p>Решим первое уравнение относительно $x$: <br> $x + 1 = -1 \cdot 2$ <br> $x + 1 = -2$ <br> $x = -2 - 1$ <br> $x = -3$</p><p>Решим второе уравнение относительно $y$: <br> $-2 + y = 3 \cdot 2$ <br> $-2 + y = 6$ <br> $y = 6 + 2$ <br> $y = 8$</p><p>Ответ: $x = -3$, $y = 8$.</p>"
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}
№710 (с. 174)
Условие. №710 (с. 174)
скриншот условия
Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета, страница 174, номер 710, Условие

является сама эта прямая.

710. Точки $A (x; -2)$ и $B (1; y)$ симметричны относительно:

1) начала координат;

2) точки $M (-1; 3)$.

Найдите $x$ и $y$.

Решение 1. №710 (с. 174)
Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета, страница 174, номер 710, Решение 1
Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета, страница 174, номер 710, Решение 1 (продолжение 2)
Решение 2. №710 (с. 174)
Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета, страница 174, номер 710, Решение 2
Решение 4. №710 (с. 174)
Геометрия, 9 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2019, оранжевого цвета, страница 174, номер 710, Решение 4
Решение 6. №710 (с. 174)

1) начала координат

Две точки симметричны относительно начала координат, если начало координат является серединой отрезка, соединяющего эти точки. Координаты середины отрезка $AB$ с концами в точках $A(x_A; y_A)$ и $B(x_B; y_B)$ вычисляются по формулам:
$x_{сер} = \frac{x_A + x_B}{2}$
$y_{сер} = \frac{y_A + y_B}{2}$

В данном случае точки $A(x; -2)$ и $B(1; y)$ симметричны относительно начала координат $O(0; 0)$. Следовательно, координаты точки $O$ являются средним арифметическим соответствующих координат точек $A$ и $B$.

Составим уравнения для каждой координаты:
Для абсциссы: $0 = \frac{x + 1}{2}$
Для ординаты: $0 = \frac{-2 + y}{2}$

Решим первое уравнение относительно $x$:
$x + 1 = 0 \cdot 2$
$x + 1 = 0$
$x = -1$

Решим второе уравнение относительно $y$:
$-2 + y = 0 \cdot 2$
$-2 + y = 0$
$y = 2$

Ответ: $x = -1$, $y = 2$.

2) точки M (-1; 3)

Если точки $A$ и $B$ симметричны относительно точки $M$, то $M$ является серединой отрезка $AB$.

Используем те же формулы для координат середины отрезка, где в качестве середины выступает точка $M(-1; 3)$.

Составим уравнения для координат:
Для абсциссы: $-1 = \frac{x + 1}{2}$
Для ординаты: $3 = \frac{-2 + y}{2}$

Решим первое уравнение относительно $x$:
$x + 1 = -1 \cdot 2$
$x + 1 = -2$
$x = -2 - 1$
$x = -3$

Решим второе уравнение относительно $y$:
$-2 + y = 3 \cdot 2$
$-2 + y = 6$
$y = 6 + 2$
$y = 8$

Ответ: $x = -3$, $y = 8$.

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