Question

The three graphs represent the progress of three runners in a 400-meter race. The solid line represents runner A. The dotted line represents runner B. The dashed line represents runner C.One runner ran at a constant rate throughout the race. Which one?

Answer 1

C

Explanation:

In the problem, it gives us the information we need to solve it.

The graph has the constant rate, so, runner C has the constant rate, and is the answer.

Answer 2

Given:

The three graphs represent the progress of three runners in a 400-meter race.

The solid line represents runner A

The dotted line represents runner B.

The dashed line represents runner C.

To identify the graph which has the constant rate throughout the race:

According to the graph,

The graph which has the constant rate throughtout the race is the dashed line graph.

Since it is a straight line, it has a constant rate.

Hence, runner C ran at a constant rate throughout the race.