Consider the following sets.

u = {all real number points on a number line}
a = {solutions to the inequality 3x + 4 ≥ 13}
b = {solutions to the inequality x + 3 ≤ 4}

for which values of x is a ⋃ b = ø?

a 2 < x < 3
b 2 ≤ x ≤ 3
c x ≤ 2 and x ≥ 3
d x < 2 and x > 3

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.