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How to use the ti-84 to create a linear equation

Use the TI-84 to Create a Linear Equation

597
STEPS
TOOLS
Press the STAT button.

Press the STAT button.

Select 1: Edit under the Edit tab.

Select 1: Edit under the Edit tab.

Enter all x values into the L1 column.  Simply press enter after each entry.

Enter all x values into the L1 column. Simply press enter after each entry.

Now enter all corresponding y values into the L2 column.  When finished double-check that there are equal numbers of x/y entries.

Now enter all corresponding y values into the L2 column. When finished double-check that there are equal numbers of x/y entries.

After entering all data into each list you must return to the STAT menu.

After entering all data into each list you must return to the STAT menu.

Go to the middle tab entitled CALC.  Then select 4:LinReg.  This is the linear regression function.

Go to the middle tab entitled CALC. Then select 4:LinReg. This is the linear regression function.

Once you see LinReg on the home screen, then press enter again.

Once you see LinReg on the home screen, then press enter again.

You should now see the following format for your equation. The letter a is the coefficient of x (slope) and the letter b is the constant value at the end of the equation (y-intercept).

This process works for both modeling equations for lines of best fit using large sets of data as well as finding the equation of a line given two points.

  • TI-84 Calculator
  • Data for x and y values