Answer
Please see the graph.
Work Step by Step
$y=3x^2$
vertex:
$x=-b/2a$
$x=-0/2*3$
$x=0$
$y=3x^2$
$y=3*0^2$
$y=3*0=0$
$(0,0)$
One other point on the curve
$x=1$
$y=3x^2$
$y=3*1^2$
$y=3*1=3$
$(1,3)$
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