So I have a lot of physics labs to write up, and when drawing graphs (using experimental data) I have a tough time 1)Determining the best scale so my graph is as big as possible. 2)Determining the best scale so intercepts(y) appear on my graph. Also, I would like help on "breaking the axis". For example when the plotted points "clump" together on the graph because there were a lot of close data on a particular axis. I never seem to do it right because my intercepts always end up being wrong.