Use the graph to answer the following questions.

8a = 20.   8b=4

Explanation:

Distance is total amount the object moved. It went from 10, to -2 which is 12 meters away, then to 6 which is 8, adding 8 and 12 is 20 so that is the distance. Displacement is how far it is relative to the starting position, so 10 and 6 are 4 meters away, therefore displacement is 4.

Hope I helped : )

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true