<P> The abscissa of a point is the signed measure of its projection on the primary axis, whose absolute value is the distance between the projection and the origin of the axis, and whose sign is given by the location on the projection relative to the origin (before: negative; after: positive). </P> <P> The ordinate of a point is the signed measure of its projection on the secondary axis, whose absolute value is the distance between the projection and the origin of the axis, and whose sign is given by the location on the projection relative to the origin (before: negative; after: positive). </P> <P> Usually these are the horizontal and vertical coordinates of a point in a two - dimensional rectangular Cartesian coordinate system . The terms can also refer to the horizontal and vertical axes respectively (typically x-axis and y--axis) of a two - dimensional graph . An ordered pair consists of two terms--the abscissa (horizontal, usually x) and the ordinate (vertical, usually y)--which define the location of a point in two - dimensional rectangular space . </P> <Dl> <Dd> (x ⏞ abscissa, y ⏞ ordinate) (\ displaystyle (\ overbrace (x) ^ (\ text (abscissa)), \ overbrace (y) ^ (\ text (ordinate)))) </Dd> </Dl>

Other name of x axis and y axis
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