What axis do you plot the independent variable and what axis do you plot the dependent variable?
It does not matter. However, in the US it has become fashion in public schools and the pablum filled texts to suggest the horizontal axis be the home of the independent variable, and the vertical axis (ordinate) be the residence of the dependent variable. You probably want to conform to this. Most people have grown to accept this convention.
The 100 year
How do you meaure the dependable