### Home > AC > Chapter 2 > Lesson 2.2.3 > Problem 2-113

2-113.

The graph below shows distances traveled by Car A and Car B. Car A is represented by the line containing point A, and Car B is represented by the line containing point B. Use the graph to answer the following questions. Homework Help ✎

Which car is traveling faster? How can you tell?

Look at the slopes of the lines.

Car A, because its line is steeper.

Find the coordinates of point A and point B.

Look at the graph.

How fast did Car A travel (in miles per hour)? How fast did Car B travel?

Speed is equal to distance divided by time.

Car A = 60 miles per hour

Car B = 30 miles per hour

Does the distance Car A has traveled vary directly with the time? Why or why not?

Yes, because the graph of Car A is a straight line through the origin.