The horizontal number line on a coordinate plane is called the x-axis, and the vertical number line on a coordinate plane is called the y-axis.
"The" vertical line is wrong; there are lots of vertical lines on a coordinate plane. In the usual x-y coordinate system, such a line has an equation of the form:x = a (for some constant "a"); for example: x = 3
The coordinate plane is formed by the intersection of a vertical and a horizontal number line. What is the horizontal number line called?
The vertical number line which helpd to form the coordinate plane
vertical - - - - - - - - - - horizontal -------------------------------
A vertical line in the xy coordinate plane would represent the line of an equation such as x = 1 or x = -4.
The coordinate plane or grid.
A coordinate plane has two axes and four quadrants. The horizontal number line is called the x-axis and the vertical line is called the y-axis.
X has two lines that cross. Think of a-cross. X axis is horizontal on a coordinate plane. Y has a vertical line... the Y axis is the vertical on a coordinate plane.
Coordinate plane
The horizontal line on the coordinate plane is the x axis and is usually in the form of a number line that meets the vertical y axis number line perpendicularly at the point of origin which is at (0, 0)
It is called the x axis and the vertical number line is the y axis