Htykuut

up vote 0 down vote favorite First of all, I apologize for my lack of proper math vocabulary. I'm mainly a programmer. I need to write an equation that relates variables s and p . ( s is star mass, p is planet radius). The equation needs to roughly fit these parameters: When s = 2, changing p between 0.01 and 2 makes the output range from 340 to 350. When s = 1, changing p makes the output range from 0 to 150. When s = 0.5, changing p makes the output range from 0 to 50. s is limited to the range 0.5 to 2, and p is limited to 0.01 to 2. Here's a visual representation of what I'm talking about: -- How do I go about solving something like this? I've been doing trial and error for a little too long, so I figured I'd open up a question on here. What I have so far is something like: $f(s, p