idk how to get the curve, so its a 2 sided parabola ig. you can insert your own A/B/C variables. The graph is going to be divided by 10. So where it says X:-240, its really going to be X:-24. Etc..
idk if this really works with everything. I used Y=-X^2-2X+5 while testing so it might not be a hundred percent accurate, but at least it is for that one equation lol.