91Ó°ÊÓ

Awedge-shaped skateboarding ramp rises to a height of 12 inches over a 50 -inch horizontal distance. (a) Draw a diagram of the ramp and label the rise and run. (b) Find the slope of the ramp.

(a) Plot the points \((3,2),(-5,4)\), and \((6,-4)\) on a rectangular coordinate system. (b) Change the sign of the \(y\)-coordinate of each point plotted in part (a). Plot the three new points on the same rectangular coordinate system used in part (a). (c) What can you infer about the location of a point when the sign of its \(y\)-coordinate is changed?