Question

Yormula1" title="y \leqslant - x - 1 \\ y \geqslant 2x + 4" alt="y \leqslant - x - 1 \\ y \geqslant 2x + 4" align="absmiddle" class="latex-formula">

Answer 1

$y\leq-x-1\\\\y=-x-1\\for\ x=-1\to y=-(-1)-1=1-1=0\to(-1;\ 0)\\for\ x=0\to y=-0-1=-1\to(0;-1)$

$y\geq2x+4\\\\y=2x+4\\for\ x=-2\to y=2\cdot(-2)+4=-4+4=0\to(-2;\ 0)\\for\ x=0\to y=2\cdot0+4=0+4=4\to(0;\ 4)$

Answer in an attachment.