Chapter 3 Linear Systems and Matrices - 3.2 Solve Linear Systems Algebraically - 3.2 Exercises - Skill Practice - Page 164: 16

$x=-4$ and $y=0$

$4x-2y=-16$ $/\times(2)$ to get rid of the $y$ $-3x+4y=12$ _________________ $8x-4y=-32$ $-3x+4y=12$ _________________ $5x=-20$ $x=-\frac{20}{5}=-4$ when $x=-4$... $-3(-4)+4y=12$ $4y+12=12$ $4y=0$ $y=0$