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Home > CAAC > 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 feet away. In order to qualify, it must be  feet off the ground at its highest point. What equation should he program into his rocket launcher to win? Let 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.
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