Answer
$y=-x$
Work Step by Step
$y=-x-2$ (parallel) (2, -2)
$y=mx+b$
$-2 = -x+b$
$-2 = -1*2 + b$
$-2 = -2 + b$
$-2 + 2 = -2 + b + 2$
$0 = b$
$y=-x$
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