Question

solve graphically x+y=-1 and y-2x=-4..... please show work for solving equations

Answer 1

\[x+y=-1\]\[ y-2x=-4\]
\[x=-1-y\]\[x=2+\frac{1}{2}y\]
\[-1-y=2+\frac{1}{2}y\]\[-3=\frac{3}{2}y\]\[y=-2\]
\[x=-1-(-2)\]\[x=1\]
\[(x,y)=(1,-2)\]