I have a Math Internal Assessment that I'm doing (basically a Math Essay...) and for one of the parts I have to find an equation for the data given. I have tried all the regressions on my calculator and found that Power Regression gives the best equation that fits the graphed data. I have a program on my computer that can do power regression, though I need to know how to do the power regression by hand (I have to "show" how I got that graph).

any input would be appreciated and sorry if this is the wrong forum because I don't really have any idea where it should go.

I know that the formula is ax^b, but I do not know what a nor b stands for...