Предмет: Алгебра, автор: арзва

1) решительно графически систему уравнений: ху=4; 2х-у=-2. Помогите пожалуйста!!!

Ответы

Автор ответа: katana4

8-4=-2
4=-2
вроде ответ 4
сам не осоьо уверен

Автор ответа: lenochkasuper5

y=4/x
y=2x+2
y=4/x функция обратной прапорциональности, график гипербола, при x=1 y=4, x=2 y=2, x=4 y=1 - это для таблички
y=2x+2 линейная функция, график прямая, при x=1 y=4, x=-1 y=0 - для таблички
строим график по табличкам
Ответ: (1;4), (-2;-2)

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