One side of a parallelogram has endpoints (3, 3) and (1, 7).

Question

What are the endpoints for the side opposite?

(8, 1) and (6, 7)
(6, 1) and (2, 3)
(6, 1) and (8, 5)
(8, 1) and (6, 5)

Answer 1

CLUE: The opposite sides are equal and
parallel. Parallel lines have equal slopes.

(3,3),(1,7). m1 = (7-3)/(1-3) = -2.
(8,1),(6,5). m2 = (5-1)/(6-8) = -2.

Answer 2

(6, 1) and (8, 5)