Math: the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically.
Also, mathematical procedures, operations, or properties.
Dictionary : Letter X
X
The letter “x” is often used in algebra to mean a value that is not yet known.
It is called a “variable” or sometimes an “unknown”.
X Axis
The line on a graph that runs horizontally (left-right) through zero.
It is used as a reference line so you can measure from it.
X Coordinate
The horizontal value in a pair of coordinates: how far along the point is.