In a Cartesian coordinate system, the yaxis sits at a 90degree angle from the xaxis. The two axes meet at a point where the numerical value of each is equal to zero. On a map of the world, this is analogous to the point where the equator is crossed by the prime meridian.
The xaxis is essentially an infinite number line running horizontally in both positive and negative directions outward from zero. With the use of such a number line, any number can be found and plotted. The yaxis is a similar number line, only running vertically and perpendicular to the first. By assigning a value for both x and y, any point on a two dimensional plane can be plotted. These values for x and y are called coordinates and given in pairs with the x value first. A point located three units to the right of the origin on the xaxis and two units above the origin on the yaxis is at the coordinates (3,2).
The Cartesian coordinate system is highly useful in mathematics and has many practical applications from engineering to map making, but what it represents is arbitrary in real terms. There is no reason, for example, to assign the directional axis that goes northsouth to y, or eastwest to x, except that it is conventional to do so.
the x and y is the name of the axis, you need to label the axis on a graph as X and Y. X is the the line that goes horizontally and y is the one that goes in a portrait way. the way
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Axis leaders were evil, power hungry, & wanted to take over the world. Allied leaders were good, believed in freedom, & wanted peace.
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zero. Edit : Also called the origin.
http://wiki.answers.com/Q/What_is_the_point_where_...
