Answer
$x+7y=-4$
Work Step by Step
$(-4,0)$ and $(3,-1)$
$m=(0--1)/(-4-3)$
$m=1/-7$
$m=-1/7$
$y=mx+b$
$0=-4*-1/7+b$
$0=4/7+b$
$-4/7=b$
$y=-1/7*x-4/7$
$7(y=-1/7*x-4/7)$
$7y=-x-4$
$7y+x=-4$
$x+7y=-4$
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