## Abscissa

### In mathematics, the abscissa refers to the horizontal coordinate of a point in a two-dimensional Cartesian coordinate system

In mathematics, the abscissa refers to the horizontal coordinate of a point in a two-dimensional Cartesian coordinate system. It determines the position of a point along the x-axis. The word “abscissa” is derived from the Latin word “absis,” which means “cut off.”

In a Cartesian coordinate system, the x-axis and the y-axis intersect at a point called the origin (usually denoted as (0,0)). The abscissa is the value of the x-coordinate of a point and is measured along the horizontal x-axis. Positive values of the abscissa are measured to the right of the origin, while negative values are measured to the left.

For example, consider the point P(3, 2) in a Cartesian coordinate system. Here, the abscissa of point P is 3, indicating that it is located at a distance of 3 units to the right of the origin.

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