Answer
$x^2-6y-9=0$, parabola.
Work Step by Step
$r=\frac{3}{1-sin\theta}$,
$r-r\ sin\theta=3$,
$r=3+r\ sin\theta$,
$r^2=(3+r\ sin\theta)^2$,
$x^2+y^2=(3+y)^2$,
$x^2=9+6y$,
$x^2-6y-9=0$, parabola.
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