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Автор - shalfeytea

Точка M-середина отрезка KP. Найдите координаты точки К, если Р (-4;5), М(1;2)

Ответ

Автор - as11111

Пусть координаты точки K равны (x; y)

Тогда для координат середины отрезка M можем записать:

frac{x-4}{2}=1\frac{y+5}{2}=2\x=6;y=-1

Координаты K(6; -1)

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