Question

The graph shows an elevator’s height, in feet, as it moves between floors, over time, in seconds.

How long was the elevator actually moving up or down?

Answer 1

7 seconds

Explanation:

When the slope is changing, the elevator is moving. The slope changes for 2 seconds from 0-2. Then for 1 second from 5-6. Then 2 seconds from 6-8. Finally, 2 more seconds from 12-14. These all added up make 7 seconds the elevator moves.