Jan uses an overhead projector to enlarge a picture 5 in. high and 7 in. wide. She projects the picture on a blackboard 4ft 2 in. high and 12 ft wide. What are the dimensions of the largest picture that can be printed on the blackboard?

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.