Answer
Vertices: $(0,±3$
Asymptotes: $y=±3x~~$ (Black lines)
Work Step by Step
Standard form when transverse axis is vertical:
$\frac{y^2}{a^2}-\frac{x^2}{b^2}=1$
$\frac{y^2}{3}-3x^2=3$
$\frac{y^2}{9}-\frac{x^2}{1}=1$
$a^2=9$
$a=3$
$b^2=1$
$b=1$
Vertices when transverse axis is vertical:
$(0,±a)=(0,±3)$
Asymptotes when transverse axis is vertical:
$y=±\frac{a}{b}x$
$y=±\frac{3}{1}x=±3x$