9 Let f(x) = 5x² 9x + 11. Use the definition of the derivative to calculate f ' (3). Do not use any derivative rules.

10 Let f(x) = x² 5. Find the tangent line to the graph of f at the point where x = 1

9. (10 points) Let f(x) = 5x2 - 9r + 11. Use the definition of the derivative to calculate f'(3). Do not use any derivative rules. 10. (10 points) Let f(x) = x2 - 5. Find the tangent line to the graph of f at the point where z = -1