Hi, It's been so long since I took any math classes! Please bear with me. I have sets of three points on various exponential graphs such as 0=100, 30=138, and 60=392 (x and y). I have found manually that this equation is somewhere very close to y=.0025x^2.85+100. I CAN do these manually (plugging in numbers into Excel and modifying them to hit the desired points on a graph), but I have a few HUNDRED of these sets. Is there a faster way? Hopefully that I can put in the 0, 30, and 60 values and Excel can determine the equation? (The built in Excel equations I have used from the graphs so far are completely wrong for what I am doing.)(adsbygoogle = window.adsbygoogle || []).push({});

Please shoot me an email if you can help me! It will help me so much! (Please keep it simple!)

Thanks a lot!

Mike

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Have exponential graph, find equation?

**Physics Forums | Science Articles, Homework Help, Discussion**