Final answer:
The average rate of change of a function is found by dividing the change in the y-values by the change in the x-values.
Step-by-step explanation:
The average rate of change of a function can be found by dividing the change in the y-values by the change in the x-values. This can be represented as rise over run, where the rise is the difference in y-values and the run is the difference in x-values. This method is represented by option A: Divide the change in y by the change in x.