What is the average rate of charge. Please write your answer as an integer or simplified fraction

In order to find the average rate of change, use the following formula:
[tex]m=\frac{f(x_2)-f(x_1)}{x_2-x_1}[/tex]In this case:
x1 = 0
x2 = 4
f(x1) = 6
f(x2) = 8
By replacing the previous values into the formula for m andby simplifying you get:
[tex]m=\frac{8-6}{4-0}=\frac{2}{4}=\frac{1}{2}[/tex]Hence, the average rate of change is 1/2