(Chapter 3.1) 1. Let f(x)=x-6x+9 f' a. Find the derivative off b. Find the point on the graph of fwhere the tangent line to the curve is horizontal. c. Sketch the graph of fand the tangent line to the curve at the point found in part (b). d. What is the rate of change of fat this point? (Chapter 3.1) 2. Find the first and the second derivatives of the function. y= 6-x