Look at the number line. From the point shown on the number line, you move one more unit to the right. What should you do next from the new point to model that the sum of opposites is zero?
A. Draw an arrow that points 1 unit to the right.
B. Draw an arrow that points 2 units to the left.
C. Draw an arrow that points 2 units to the right.
D. Draw an arrow that points 3 units to the left.

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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.