. What I am looking for is a graphing program that can graph linear, circle, and quadratic equations EXACTLY as they are written. I have tried KMPlot and QTOctave and they aren't what I'm looking for. One thing I like to do when teaching math is to have my students demonstrate their graphing on the board over a graph projected by my computer. then, I want the students to input the equation into a program to check their work. Is there anything out there that will let me do that? Or is there a way I can tweak the aforementioned programs to do what I want?