One of the lines (the other is the y-axis) that divides the coordinate plane into four quadrants

The coordinate plane is organized around two axes: the x-axis running horizontally, and the y-axis running vertically. The position of a point on the plane is described by two numbers that measure the distance from the point to these two reference lines. See Coordinates of a point

(C) 2011 Copyright Math Open Reference.

All rights reserved

All rights reserved