Esa Sam is a software salesman. His monthly salary is $1600 plus an additional $70 for every copy of Math is Fun he sells.
Let S represent his total salary this month (in dollars), and let N represent the number of copies of Math is Fun he sells. Write an
Equation relating S to N and then graph your equation using the axes below

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.