Answer:
The runner's speed is 10 minutes per mile.
Explanation:
When looking at the graph, the first dot lands at 1.0 miles for the x-axis and 10 for the y-axis, the y-axis being in minutes. Therefore, someone can run 1.0 miles in 10 minutes.
In addition, the second dot lands on (2.0, 20), meaning he/she ran 2.0 miles in 20 minutes. Divide that by 2 and you get 1.0 miles in 10 minutes.