Coordinate Plane

Graphing in four quadrants: https://www.youtube.com/watch?v=6IJY16cldEA

Plotting Points: http://www.youtube.com/watch?v=cTkZPYsddls&feature=plcp

Ordered Pairs and Intersections: http://www.youtube.com/watch?v=-r6EMlL-fkI

Reflecting Ordered Pairs: https://www.youtube.com/watch?v=MudXEUm-dcY