Answer
-7 and 3 are possible coordinates.
Work Step by Step
$PQ=|P-Q|$
$5=|-2-Q|$
$-2-Q=5$ OR $-2-Q=-5$
$-2-Q+2=5+2$ OR $-2-Q+2=-5+2$
$-Q=7$ OR $-Q=-3$
$-Q\times-1=7\times-1$ OR $-Q\times-1=-3\times-1$
$Q=-7$ OR $Q=3$
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