## Precalculus (6th Edition) Blitzer

Step 1. Rewrite the given equation as $r=\frac{3}{1-sin\theta}$ and compare with one of the standard forms. Step 2. We can identify $e=1, ep=3, p=3$; the conic is a parabola with directrix $y=-3$ Step 3. Based on the standard plot, with test values, we can graph the equation as shown in the figure.