Plot some points. Select the series, and on the Chart menu, select Add
Trendline. Add a linear trendline, and on the Options tab, select Display
Equation on Chart, and if desired, Display R-Squared Value on Chart.

- Jon
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Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
http://PeltierTech.com
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"jessrand" wrote in message
...
I am taking a chem lab and i have to add the y=mx+b formula to my graph. I
know that I should be able to do this but i do not remember how.