# calculate x using regression equation

I calculated the cubic regression for a set of numbers following the instructions on this site:

http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=71235

I am wondering how do I evaluate using the equation provided by the cubic regression without having to write down the equation on paper, and then typing in in the calculator.

Ted

-

Now, you can use the graph and trace to evaluate or use the table to evaluate (or directly evaluate on the home screen using $Y_1(value)$, but that's harder to use).