### Home > CCA2 > Chapter 1 > Lesson 1.2.4 > Problem 1-112

Explain what each line segment in the graph represents.

Are they traveling at the same speed all throughout the trip?

A portion of the trip at a specific speed.

About how many miles is it from Vacaville to Los Angeles? How do you know?

Which axis represents miles?

About 400 miles.

Using the graph shown above, sketch a graph that would represent their

*speed*while traveling. Take your time to think this through carefully and be sure to label the axes.To find the speed for a portion of the trip, divide the number of miles traveled in that portion by the number of hours it took to travel that portion.

Graph shown below - a speed of approximately 30 mph for 1 hour, approximately 80 mph for the next 3 hours, 0 mph for 2 hours, approximately 40 mph for 2 hours, and then approximately 20 mph for the last 2 hours; note that the step graph assumes instantaneous change of speed, which is not technically possible.