Answer
$x^2=\frac{3}{2}y$
Focus: $(0,\frac{3}{8})$
Work Step by Step
Parabola in the standard form with the vertex at origin (vertical axis):
$x^2=4py$
$3^2=4p(6)$
$9=24p$
$p=\frac{3}{8}$
$x^2=4(\frac{3}{8})y$
$x^2=\frac{3}{2}y$
Focus: $(0,p)=(0,\frac{3}{8})$