An answer can be found here:
It is the axis of symmetry.
The x axis is usually the horizontal number line on a bar graph.
It is simply a horizontal line. No special name, unless you're referring to the axis/axes. The horizontal line is the 'x-axis' in a graph.
It could be a velocity graph or an acceleration graph. If the plot is a straight line it is constant velocity. If the plot is a curve it is acceleration.
The y-axis is the vertical line on a line graph.
Y axis
The "abscissa"
An answer can be found here:
its the x-axis on a line graph
It is called the dependent variable
It is the axis of symmetry.
X-Axis
Easy way to remember which axis is which: x is a cross (across)
Easy way to remember which axis is which: x is a cross (across)
The x axis is usually the horizontal number line on a bar graph.
Axis