TI calculators are produced by Texas Instruments. The TI‑83 Plus, a graphing scientific calculator, is permitted on many standardized exams. One common task is computing the slope of a line, which the TI‑83 Plus handles effortlessly with a few keystrokes.

Step 1 – Access the Statistical Editor

Press the STAT button and hit Enter to open the STAT edit screen.

Step 2 – Clear Existing Data

Clear any previous entries in lists L1 and L2. Highlight the list with the arrow keys and press CLEAR.

Step 3 – Input Your Coordinates

Enter the x‑values in L1 and the corresponding y‑values in L2. For example, for points (1, –5) and (–3, 6), input 1 and –3 into L1 and 6 and –5 into L2.

Step 4 – Return to the STAT Menu

Press STAT again to go back to the main STAT screen.

Step 5 – Choose the Calculator Function

Move the cursor to CALC using the arrow keys.

Step 6 – Select Linear Regression

Scroll to LinReg(ax+b) and highlight it.

Step 7 – Execute the Calculation

Press Enter. The calculator will compute the linear regression using the data you entered.

Step 8 – Read the Slope

Locate the value next to a=; this is the slope of your line.