PQRS is a parallelogram, m∠P=121∘ , and m∠S=(7x−4)∘ .

What is the value of x?

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Which one is true about the hexagons ?

Ineed to know the answer to this algebra question.