Activity 3. Solve the following. 1. Show that the tangent line to the curve f(x) = 2x2 - 4x +5 at point (1, 3) is horizontal. What is the equation of the tangent line? 2. If f (x) = x2 - 6x +4, then, a) Find f' (x) b) Find the equation of the tangent line to the graph at (-2, 20). c) Find the equation of the normal at the same point (-2, 20). (Hint: Normal line is a line perpendicular to the tangent line.) Reflection A notetaking activity Slope of tangent line VS Secant VS Tangent Derivatives Tangent Line VS normal line 8