Hi I have Mathcad ver. 8 professional, I am having trouble plotting data points on a graph. My case in point. I was recording voltages at the base input of a transistor stage. I recorded 12 input voltages. I was checking Volt out with these inputs. Instead of drawing up a grid and making a graph, to check for linearity, I decided to use my Mathcad, I read all the instructions, on plotting graphs, which was very poorly illustrated, but finally figured out how to get a graph working, but the problem I'm having is Mathcad wants to put in it's own Y axis variables. My x axis consisted of the 12 tests. My y axis was the actual voltages measured. The graph plotted out these data points, however my y axis I constrained to 2.99v down to 2.32v. but Mathcad made my "y" axis from 3 to -3 so when it plotted my actual data points (voltages) it was very generalized at the top of the graph. I wanted the "y" axis to start at 2v and end up at 3v. so as to check for linearity of the data points. Is there a way to customize the axis on these graphs. I hope I explained it good enough. Thanks for any help..