Question

The graph below shows the distance (y) between Hannah and her home, in km, after a certain time (x), in hours:

Which of the following statements best describes Hannah's distance from her home?

It is decreasing in the interval 2 < x < 4 hours.
It is increasing in the interval 2 < x < 3 hours.
It is decreasing in the interval 2 < x < 3 hours.
It is increasing in the interval 2 < x < 4 hours.

Answer 1

C. It is decreasing in the interval 2 < x < 3

Explanation:

I just took the test and this answer was correct. The expert verified answer is incorrect.

Answer 2

The best answer is
B) It is increasing in the interval 2 < x < 3 hours.

The time in which Hanna's distance is decreasing is also the interval in which the slope is negative. This happens on the interval 2 < x < 3 hours.