9 you just read the graph. The distance traveled is pretty remarkable.
Discussion
1 hour = 60 minutes.
Read the graph until you hit the line when you start from 60 minutes and go vertically until you hit the line. When you hit the line go horizontally and read what you see on the y axis. It should be 9.
There are other ways of solving this problem, but as long as you have the graph, you might just as well use it.
9 miles he traveled on tuesday, why? because if you were to draw a line connecting the dots and went to the x coordinate 60 (hour in minutes) on the line you drew, you can see its also at 9 miles on the y coordinate
