2. The Coordinate Plane

3. coordinate plane In coordinate Geometry, grid paper is used to locate points. The plane of the grid is called the coordinate plane.

4. quadrants The two axes separate the plane into four regions called quadrants.

5. Points can lie in one of the four quadrants or on an axis. X axis Y axis

6. The points on the x-axis to the right of the origin correspond to positive numbers. Origin

7. To the left of the origin, the points correspond to negative numbers. Origin

8. The points on the y-axis above the origin correspond to positive numbers. Origin

9. Below the origin, the points correspond to negative numbers. Origin

10. ordered pair coordinates An ordered pair of real numbers, called the coordinates of a point, locates a point in the coordinate plane. Each ordered pair corresponds to exactly one point in the coordinate plane.

11. graph The point in the coordinate plane is called the graph of the ordered pair. Locating a point on the coordinate plane is called graphing the ordered pair.