Предмет: Математика, автор: AkaJaka

при каких значениях a и b прямые ax+by=-4 и 2x-2y=4 совпадают?

Ответы

Автор ответа: Vasily1975
16
Записываем второе уравнение в виде -2*x+2*y=-4. Отсюда a=-2, b=2. Ответ: при a=-2, b=2.
AkaJaka: Можно по подробнее с объяснение пожалуйста
Vasily1975: Прямые совпадают, если они заданы одинаковыми уравнениями. А в данном случае уравнения одинаковы при a=-2 и b=2.
AkaJaka: спасибо
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