## Precalculus (6th Edition) Blitzer

$y^2=200x$
Step 1. With the given conditions, we have $p=\frac{50+50}{2}=50$, with the parabola opening to the right. Step 2. The vertex is at $(0,0)$; thus we can write the equation as $y^2=4px$ or $y^2=200x$