Translate each situation into an equation:
1) janine, who bought $15 worth of make up, spent $6 less than leah spent.
2)rob, who has all 13 girls' phone numbers that are in his homeroom, has 3 more than half the number of girls' phone number that jay has.

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.