The graph shows the distance Arlene ran on Saturday preparing for a marathon. What is the rate of change and what does it represent?

Rate of change = 6 miles per hour

Step-by-step explanation:

Rate of change of the line is represented by the slope of the line.

Formula to get the rate of change is,

m =

From the graph attached,

Given straight line is passing through two points (2, 12) and (4, 24).

Rate of change =

                          =

                          = 6

Rate of change of the line = 6 miles per hour

Therefore, rate of change of the graph will define the speed of Arlene.

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