Question

Image of parabola with a maximum value at (1, 9), y-intercept at (0, 8) and x-intercepts at (2, 0) and (4, 0).

The graph above can be used to model a coin being tossed from a height of 8 feet in as a function of time in seconds. How long was the coin in the air?
Group of answer choices
4 seconds

1 second

9 seconds

6 seconds

Answer 1

(a) 4 seconds

Explanation:

The given point (4, 0) on the parabola tells you the answer to the question: the coin was in the air 4 seconds before its height is 0. It is no longer in the air at that point.

__

Additional comment

In order to match the rest of the problem statement, the first given x-intercept must be (-2, 0).