6th grade math help me pleasee

Answer:
The height above ground level of a rider on a roller coaster over the duration of the ride
Step-by-step explanation:
Answer:
The one that says roller coaster in it.
Step-by-step explanation:
The rest are constant rates so they shouldn't be going up and down on a graph. Since the roller coaster height goes up and down and not straight, it would look like what is shown on the graph.