Position of a point on a number line.

The first element in an ordered pair of the coordinates of a point, which represents the position on the horizontal axis of the Cartesian coordinate system

### Examples

In the diagram below, the position of the point indicated by the blue arrow is \(700\).

In this Cartesian plane, the x-coordinate of point \(A\) is 6.

### See also:

### Educational Note

In a Cartesian plane in two-dimensional geometric space, the horizontal axis is called the *x*-axis.

### Etymological Note

From the Latin *abscissus* meaning “cut-off line” It is said that Isaac Newton used the term “*x*-coordinate” in 1686 and Blaise Pascal used the term “*y*-coordinate” in the same period. Some authors attribute the introduction of the terms “*x*-coordinate” and “*y*-coordinate” to Gottfried Wilhelm Leibniz (1646-1716) in 1692.