Предмет: Алгебра, автор: КсюОксю

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Автор ответа: dnepr1
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Уравнение прямой у = кх + в.   к = -4.
Она проходит через точку (2;7).
Подставим эти значения в уравнение:
7 = -4*2 + в     в = 7 + 8 = 15.
Уравнение прямой у = -4х + 15.
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Предмет: Алгебра, автор: новенькаяя