Answer
$y=-9$
Work Step by Step
Line $p$ goes through $(5,-2)$ and has $m=0$
$y=mx+b$
$-2 = 0*5+b$
$-2 = 0+b$
$-2 = b$
$y=-2$
Line $q$ is parallel to line $p$, so the equation for line $q$ will also be of the form $y=b$.
$(-13, -9)$
$y=mx+b$
$-9 = -13*0+b$
$-9 = 0+b$
$-9 = b$
$y=-9$