Answer
$y=-4$
Work Step by Step
$y=mx+b$, goes through $(-2, -4)$, slope is 0
$y=mx+b$
$-4 = 0*-2+b$
$-4=0+b$
$-4=b$
$y=0*x+(-4)$
$y=0-4$
$y=-4$
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