To obtain the average rate of change from x = 3 to x = 7
We will have to obtain the corresponding values of y at the points x=3 and x=7
From the graph, we can observe that when x = 3, y = 1
also, when x = 7, y = 3
So the rate of change can be obtained by the formula:
=> change in y values/ change in x values
so let x1 =3, then y1 = 1
when x2= 7, y2 = 3
Upon substituting these values in the above equation
rate of change = 0.5