Предмет: Алгебра, автор: zuchokdasha5857

не виконуючи побудову, знайти координати точки перетину графіків функцій у=-2х-1, у=х+7

Ответы

Автор ответа: milkameri23

1

3x-12=8x+4 8x-3x=-12-4 5x=-16 x=-3,2 y=3*(-3,2)-12=-9,6-12=-21,6 (-3,2;-21,6)

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