### Home > A2C > Chapter 8 > Lesson 8.2.1 > Problem8-122

8-122.

David Longshot is known for his long golf drives. Today he hit the ball 250 yards. He estimated that the ball reached a maximum height of 15 yards. Find a quadratic equation that would model the path of the golf ball. Homework Help ✎

A sketch of the graph would look like the one below.

You must find the value of a for the quadratic equation.
y = a(xh)2 + k
What is the vertex?
Use the vertex and another point to solve for a.

$\textit{a}=-\frac{3}{3125}=-0.00096$