I know this is a really off the wall question, and I don't know where else to put it so here goes:

For the past 2 months I've been trying to figure out an equation for a parabolic line, I've tried all methods I can find around the internet, and several contacts have not been able to assist me.

I need to find the equation that satisfies these three points without giving the letters set numerical values:

(0,C) (T,100) (T+100,100)

Any and All help would be greatly appreciated, it'd been burning my brain to find the answer to this