### Home > MC2 > Chapter 9 > Lesson 9.3.1 > Problem 9-84

Use the graph at right to answer the following questions.

What is this graph describing? Write an appropriate title for the graph.

Look at the

-axis and-axis labels. The graph shows the

distance from home at several different time periods.Possible title: Distance and Time

How far from home is the person when the graph starts?

The graph starts at 0 hours. Which means this person just

started the travel. What is the distance from home athours? He starts at

miles from home. How fast is the person traveling? Explain how you can use the graph to determine the rate of travel.

Find the slope of the line.

Write an equation to represent the line on the graph.

A slope of

means that the distance from home increases miles per hour. That means we multiply and any hour which we will call .Since we know how fast this person is traveling, we also need to know the starting distance. From part (b) we found that this person started

miles away from home.