a Write the equation of the line that represents the linear approximation to the following function at the given point a b Use the linear approximation to estimate the given quantity c Compute the percent error in the approximation 100 f x 15 x at a 1 f 0 9 a L x b Using the linear approximation f 0 9 Type an integer or a decimal c The percent error in the approximation is approximation exact exact where the exact value is given by a calculator