Two particles are moving in a coordinate plane. particle 1 is at the point
and moving along the velocity vector −2
1

particle 2 is at the point −1
1
and moving along the velocity vector
are the two particles going to collide? if so, at
what point, and at what time? assume that time is measured in seconds.

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.