Click the Secant Line, Slope of Secant, and Values boxes. Set the x-slider to the point x = 4.5 and the x + h-slider to 5. Complete parts 1 through 3 below. Use the interactive figure to find your answer. Use the left and right arrow keys to move along a slider as needed. Click here to launch the interactive figure. Part 1: What is the slope m of the secant line when x = 4.5 and h = 0.5? m =