Two cyclists, 40 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other. If they meet 2
hours later, what is the speed (in mi/h) of the faster cyclist?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.