- The Y-axis on a cartesian graph is a vertical line up-down that passes through the zero-point origin and measures the y- coordinate of points in the ordered pair (x, y). It is marked with negative values below the origin and positive values above.
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y-ax· is ˈwī-ˌak-səs 1 : the axis of a plane Cartesian coordinate system parallel to which ordinates are measured 2 : one of the three axes in a three-dimensional rectangular coordinate system Word History First Known Use 1875, in the meaning defined at sense 1 Time Traveler The first known use of y-axis was in 1875
Y Axis Definition (Illustrated Mathematics Dictionary) Definition of Y Axis more ... The line on a graph that runs vertically (up-down) through zero. It is used as a reference line so you can measure from it. See: Coordinates Cartesian Coordinates
The y-axis is one of the two number lines that make up a 2D rectangular coordinate system (or one of three in a 3D coordinate system). The y-axis is almost always the vertical axis in a 2D rectangular coordinate system. The other number line in a 2D rectangular coordinate system is the x-axis.
In mathematics, an axis is a line with different meanings depending on the context. In a coordinate system, the axes are the reference lines (named the x- and y-axis) that form the coordinate plane. In the context of symmetry and rotation, an axis is the line that the object is reflected or rotated about. Axis of a coordinate system
y-axis noun a reference axis, usually vertical, of a graph or two- or three-dimensional Cartesian coordinate system along which the y- coordinate is measured Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012