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 Related Terms
 y-axis:  The vertical number line on the Cartesian coordinate plane.
Coordinate Plane: A two-dimensional region determined by a pair of axes and that uses numerical values to represent the location of an object.
Vertical Line: A line that goes up and down.
Origin: The point of intersection of the vertical and horizontal axes of a Cartesian plane. The coordinates of the origin are (0, 0).
x-coordinate: The first number of in ordered pair; the position of a point relative to the vertical axis.
y-coordinate: The second number in an ordered pair; the position of a point relative to the horizontal axis.
Axis: A reference line used in a graph or coordinate system.
Quadrant: One of the four regions on a Coordinate plane formed by the intersection of the x-axis and the y-axis.
x-axis: The horizontal number line on the Cartesian coordinate plane.