Question

9 класс алгебра, срочно, буду благодарен

Answer 1

$1)\ \ \left\{\begin{array}{l}y-x<0\\2x+y\leq 0\end{array}\right\ \ \ \left\{\begin{array}{l}y<x\\y\leq -2x\end{array}\right\\\\\\2)\ \left\{\begin{array}{l}y-2x<0\\3x+y\leq 3\end{array}\right\ \ \ \left\{\begin{array}{l}y<2x\\y\leq 3-3x\end{array}\right\\\\\\3)\ \ \left\{\begin{array}{l}2y-x\geq 0\\2x-y\leq 0\end{array}\right\ \ \left\{\begin{array}{l}y\geq \dfrac{x}{2}\\y\geq 2x\end{array}\right$

$3)\ \ \left\{\begin{array}{l}y-3x+1\geq 0\\x+2y\leq 6\end{array}\right\ \ \ \left\{\begin{array}{l}y\geq 3x-1\\y\leq 3-\dfrac{x}{2}\end{array}\right$