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

9-84.

Look at the *x*-axis and *y*-axis labels. The graph shows the

distance from home at several different time periods.

Possible title: Distance and Time

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

started the travel. What is the distance from home at 0 hours?

He starts at 9 miles from home.

Find the slope of the line.

A slope of 2.5 means that the distance from home increases 2.5 miles per hour. That means we multiply 2.5 and any hour which we will call *x*.

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 9 miles away from home.