let us take is slow :)
A plane is 2D but we can graph stuff in 3Dd and 4D by splitting the Z axis to 45 degrees (0.5 dimension - fractal). And 4D by moving it from one set of plots (ie cube) to another set in a linear fashion.
https://www.google.com/search?q=cube++moved+in+graph&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjCoqe_1t3aAhXK44MKHRkYB0cQ_AUoAXoECAAQAw&biw=1280&bih=853