Question

Срочно помогите даю 50 балов!!!!!
​

Answer 1

Ответ:

$1)\ \ y=-2x+3\ \ ,\ \ \ y=2,5x-1$

Точка пересечения  (0,889 ; 1,222)  .

$2a)\ \ \left\{\begin{array}{l}y=3x\\y=x-4\end{array}\ \ \left\{\begin{array}{l}y=3x\\3x=x-4\end{array}\ \ \left\{\begin{array}{l}y=3x\\2x=-4\end{array}\ \ \left\{\begin{array}{l}y=-6\\x=-2\end{array}\ \ \ A(-2;-6)$

$b)\ \ \left\{\begin{array}{l}y=6-2x\\y=4x-2\end{array}\right\ \ \left\{\begin{array}{l}6-2x=4x-2\\y=4x-2\end{array}\right\ \ \left\{\begin{array}{l}8=6x\\y=4x-2\end{array}\ \ \left\{\begin{array}{l}x=\dfrac{4}{3}\\y=\dfrac{10}{3}\end{array}\right$

$A\Big(\ \dfrac{4}{3}\, ;\, \dfrac{10}{3}\Big)$