You and your friend collect football cards. you tell your friend that you have 3 times the number of cards he has. your friend replies that you only have 80 more football cards then he does. how many cards do you each have?

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

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.