### Home > A2C > Chapter 1 > Lesson 1.2.4 > Problem 1-113

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

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

mph for hour, approximately mph for the next hours, mph for hours, approximately mph for hours, and then approximately mph for the last hours; note that the step graph assumes instantaneous change of speed, which is not technically possible.