Question

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

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)