Question

Use the image to answer the question.

A graph shows an increasing function that curves upward in quadrant one. The horizontal axis is labeled x and the vertical axis is labeled y.
▼Click for Long Desc
The points left parenthesis 1 comma 2 right parenthesis and left parenthesis 3 comma 10 right parenthesis are plotted on the graph of the function. The y axis is marked in increments of 1 from 1 to 11 and the x axis is marked in increments of 1 from 1 to 3.

What is the average rate of change of the function graphed on the interval x:[1,3]
?

(1 point)
Responses

26
26

6
6

13
13

−1

Answer 1

Average rate of change = (f(3) − f(1)) / (3 − 1) = (10 − 2) / 2 = 8 / 2 = 4.