Identify the two points on the function, ((x_1, f(x_1))) and ((x_2, f(x_2)))
Subtract the y-values: (f(x_2) – f(x_1))
Subtract the x-values: (x_2 – x_1)
Divide the change in y by the change in x
Use the formula: (dfrac{f(x_2) – f(x_1)}{x_2 – x_1})
Simplify the result