On an xy-graph, three corners of a
parallelogram are located at (3, 3), (4, – 4),
and (–2, –1). Which of the following points
could be the remaining corner? Choose the correct answer:
A) (8, 0) B) (8, –1) C) (–1, 9) D) (–3, 6) E) (–5, 7)
A good way to begin is to draw a picture showing the three points given, including   possible places where a fourth point would form a parallelogram. Here’s what your   picture may look like:   y   A   B   C   (4, –4)   (–2, –1)   (3, 3)   x   This figure shows three possible points for the remaining corner of the parallelogram: A, B,   and C. To find the exact coordinates of these three additional points, choose any of the   given points and count up and over (or down and over) to a second given point. Then,   starting from the third given point, count the same number of steps up and over (or down   and over) and label the point where you end up.   By this method, you find that A = (–3, 6), B = (9, 0), and C = (–1, –8). Only point A is listed   as an answer.   correct answer (8, 0))(8, 0)
<result>A</result>
On an xy-graph, three corners of a
parallelogram are located at (3, 3), (4, – 4),
and (–2, –1). Which of the following points
could be the remaining corner?