Предмет: Математика, автор: 999Said

Прямая задана уравнением
2x+3y+25=0 принадлежит ли этой прямой точка K(-4;-7)

Ответы

Автор ответа: UluanaV
0

Чтобы узнать, принадлежит ли точка К прямой, нужно координаты точки К подставить в уравнение, задающее эту прямую, и проверить выполняется ли равенство.


2х+3у+25=0

К (-4; -7)


х= –4

у= –7


2*(–4)+3*(–7)+25=–8–21+25=–4

–4≠0


Вывод: точка К (–4;–7) не принадлежит прямой, заданной уравнением 2х+3у+25=0.

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