# Algebra Examples

, ,

Add to both sides of the equation.

Write as a function.

The average rate of change of a function can be found by calculating the change in values of the two points divided by the change in values of the two points.

Substitute the equation for and , replacing in the function with the corresponding value.

Simplify the numerator.

Multiply by .

Multiply by .

Add and .

Multiply by .

Add and .

Subtract from .

Simplify the denominator.

Multiply by .

Add and .

Divide by .