### Home > AC > Chapter 10 > Lesson 10.4.2 > Problem 10-138

Chad is entering a rocket competition. He needs to program his rocket so that when it is launched from the ground, it lands

*represent the distance from the launch pad in feet and*

*represent the height of the rocket in feet. Draw a sketch of the rocket’s path.*

Find the -intercepts.

Substitute the -intercept values into the equation formula.

Find the vertex.

Substitute the vertex into the equation you found so far and solve for .

Divide both sides by

The equation is or

*.*

Program the equation you found above into box 5 below to see the rocket's path.

Click on the link at right for the full eTool version: *AC 10-138 HW eTool* (Desmos)