I have no idea what you are talking about unless you mean use regression analysis to find a best linear fit to the data. If that is what you are trying to do, Google
linear regression
for example there is an online calculator here:
http://www.alcula.com/calculators/statistics/linear-regression/
transformation necessary to linearize the data. Be sure to convince me that you understand.
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By the way the formula used for linear regression is at the bottom of that web page if you need it or are doing the regression by hand. Most scientific hand calculators have an app for linear regression.