Use the alternate definition of the derivative to find f'(5) if f(x)=x-9. 11. Let f(x) = 5x + 3 a) Find f'(-2) using the alternate definition of the derivative. b) Write the equation of the tangent line to f(x) dx = -2 c) Write the equation of the normal line to f(x) at x = -2. 2 Graph off 8. Where is the graph of f not differentiable? Circle all that apply Ax=0 8.x=1 Cx=2 Dx=3 9. Use your calculator to find f'(-7) if f(x) = 2 lnx + 18. 12 Draw a graph that is continuous ot x = 3 but is not differentiable at x = 3.