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What Do 'Ordinate' And 'Abscissa' Mean?

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Fred Hamill answered
The value of a co-ordinate on the vertical axis of a graph. The vertical axis of a graph is known as the ordinate and the horizontal axis of a graph is known as the abscissa. In a system of rectangular Cartesian co-ordinates which is two-dimensional, the vertical co-ordinate is denoted by the letter y.

Therefore, the ordinate or the vertical axis of a graph is also commonly known as the y-axis of a graph. On the other hand, the horizontal co-ordinate is denoted by the letter x. Therefore, the abscissa or the horizontal axis of a graph is also commonly known as the x-axis of a graph. The x-axis or the x co-ordinate (also known as the horizontal axis of the graph or its abscissa) is the first element in a pair of co-ordinates.

On the other hand, the y-axis or the y co-ordinate (also known as the vertical axis of the graph or its ordinate) is the second element in a pair of co-ordinates.

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