What is a Cartesian plate?

a Cartesian Plate is the graph system you use in elementary school. it has 4 quadrants I, II, III, IV. going counter clockwise starting at the top right corner. when you do graphing in school like bar graphs, your using quadrant I. the origin is the center point, (0,0). and you have to label the x and y axis. in highschool its used mostly for system of equations and triangles etc.

hope this helps