To find any x-intercepts (also called zeros), use the CALC zero feature. You will need to answer three questions during this process. To set the Left Bound, use any value of x near but a little to the left of the x-intercept. The Right Bound can be any value of x near but a little to the right of the x-intercept. For the Guess, use a value of x that is close to the intercept itself. Let's find the left x-intercept first.
When the calculator asks each question, the graph is put into trace mode. Just move the cursor to the value of x you want for each question, then press ENTER. The TI-83/84 will mark the bounds at the top of the screen with arrows. The coordinates of the zero (x-intercept) are then displayed, in this case x is approximately 1.75. |
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(6 times) 
(move the cursor near the zero) 
