Me with this systems of equations problem

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.

Can you divide 25 into 4 equal groups? explain why or why not.

Arectangular yard has area 96 square feet. if the width of the yard is 4 feet less than the length