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Algebra 1

7.6.4 Interpreting Graphs of Quadratic Functions

Algebra 17.6.4 Interpreting Graphs of Quadratic Functions
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The height in feet, hh, of a stomp rocket (propelled by a short blast of air) above the ground after tt seconds is given by the equation h(t)=5+100t−16t2h(t)=5+100t−16t2. Here is a graph that represents hh.

A parabola on a coordinate grid. The x-axis represents time in seconds and the y-axis represents the height above the ground in feet. The x-axis scale is 1 and extends from 0 to 7. The y-axis scale is 50 extends from 0 to 200.
1.

How does the 5 in the equation relate to the graph?

2.

What does 100t100t in the equation mean in terms of the rocket?

3.

What does the −16t2−16t2 mean in terms of the rocket?

4.

About when does the rocket hit the ground?

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