Identifying an Inequality from its Graph

On a coordinate plane, a dashed straight line with negative slope goes through (0, 4) and (1.3, 0). Everything to the left of the line is shaded.

Analyze the graph. Which inequality represents the graph?

y > Negative one-thirdx + 4

y < Negative one-thirdx + 4

y > –3x + 4

y < –3x + 4

1.
Height h = 240 feet
We insert it into formula.

Now we solve this for t:


We have two answers as the rocket will pass this height on it's way up and down.

2.
Height h = 0 feet
We insert it into formula.

Now we solve this for t:

We do not consider solution -1 as the time can not be negative. Our solution is 5s.

3.
Height at bottom of hill h = 0 feet
We insert it into formula.