Can you think of a situation where time is not the x variable

Scientists like to say that the "independent" variable goes on the x-axis (the bottom, horizontal one) and the "dependent" variable goes of the y-axis (the left side, vertical one). This does not mean that the x variable is out partying while the y variable is whining about the x variable never being around - - that's co-dependence, which is a completely different kettle of fish.