Answer
0, Undefined
Work Step by Step
Replace $x$ with -3 and $y$ with 0 in $xy$:
$xy=-3\times(0)=0$,
Replace $x$ with -3 and $y$ with 0 in $\frac{x}{y}$:
$\frac{x}{y}=\frac{-3}{0}=Undefined$
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