## Precalculus (6th Edition) Blitzer

Step 1. Examine the equation. We have $e=1, p=1$. It is a parabola with a vertex at the pole and a directrix as $y=1$ Step 2. The parabola opens downward and we can use test points to determine how fast it opens up. Step 3. Within $[0,2\pi)$, select some test points such as $\theta=0, \frac{\pi}{4}, \frac{\pi}{2}, \frac{3\pi}{4},\pi$ and calculate the $r$ values and place points on the graph. Step 4. With the known parabola shape and orientation, connect the test points to form the graph.