Answer
See the graph
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Work Step by Step
We are given: $y=3x^2$
Let's make a table of values:
$x=-2 \rightarrow y=12$
$x=-1 \rightarrow y=3$
$x=0 \rightarrow y=0$
$x=1 \rightarrow y=3$
$x=2 \rightarrow y=12$
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