y-axis
The y axis always runs vertically.
y-
vertical axis :)
A line running north and south/ up and down is called a vertical line.
The x-axis runs horizontally across the graph and the y-axis runs vertically on it.
a horizantal line
On a standard Cartesian graph, there are two axes. The Y axis runs vertically, bottom to top and the X axis runs horizontally from left to right.
In geometry, the x-coordination is a line that runs vertically from the origin.
The lines of longitude run from pole to pole.
The one that runs left to right, you mean..
A vertical line is a line that runs up and down. On a graph, it is either the y axis or parallel to the y axis. It is also perpendicular to the x axis.
The veritical lines that run across the earth are latitude. The horazontal line that runs across the earth is the equator.