Topic: I need something specific.

I want to use the graph program to draw lines on a map.  I basically need some paint features to be built into the graph program, so that when I enter an equation it draws onto a picture that I have already created.

Re: I need something specific.

Graph was not really meant for that sort of thing. But I think you can place your picture into a text label and use it as background. I might add something in a later version to make this easier.