Consider the curve y = x2 + 4x + 8. (a) Find the slope of the secant line to the curve through the points where x = 9 and x = 9 + h. X (b) Use your answer from part (a) to find the slope of the tangent line at the point where x = 9. X (c) Find the equation of the tangent line at the point where x = 9. X