Here is essentially what I need to do for a school essay: I have an excel sheet with 200 points (x corresponding to A1 column values, y corresponding to B1 column values). I need to find a way to transfer this to a graphing program in quadrant 1 (all x,y coordinates are >= 1 and less than or equal to 20. I need to be able to graph the circle with radius 20 (just the quadrant 1 selection of it) here as well. A good graping program to do this was brought up b the teacher --> KaleidaGraph. However, it cost $150. Is there anything free-graphing program that's able to do what I need? If not, what other programs out there, that cost money, are able to do this? Thank you.