To store a regression model into y=, follow the steps below.

Data for this example:
L1: 3, 5, 8, 10, 15
L2: 7, 8, 12, 14, 17

Store the regression model:

1. Press m to enter the statistics menu.
2. Press the right arrow key › to reach the CALC menu.
3. Select option 4: LinReg(ax+b) or option 8: LinReg(a+bx).
4. Ensure XLIST is set at L2 and Store RegEQ is set at Y2. Press b Ž and select Y2.
5. Select the softkeys for CALCULATE by pressing d or f.
   Note: The regression equation is stored in the chosen Y= function (for example, Y2) after the regression calculation is performed.