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📚 Modeling, Functions, and Graphs
Chapters ▾
1 Functions and Their Graphs2 Modeling with Functions3 Power Functions4 Exponential Functions5 Logarithmic Functions6 Quadratic Functions7 Polynomial and Rational Functions8 Linear Systems9 Sequences and Series10 Algebra Skills Refresher11 Using a Graphing Calculator12 Using a GeoGebra Calculator App13 Glossary14 Properties of Numbers15 Geometry formulas16 GNU Free Documentation License

11.1 Getting Started

On and Off

Press ON to turn on the calculator (see Figurea). You will see a cursor blinking in the upper left corner of the Home screen. Press 2ndON to turn off the calculator.

Numbers and Operations

The parentheses keys, the Clear key, and the Enter key are shown in Figurea. Locate the number keys, operation keys, and arrow keys on your calculator, as shown in Figureb.

We use the key for subtraction, but we use the (-) key (located next to ENTER) for negative numbers.

We press ENTER to tell the calculator to compute.

The calculator has a key for the value of π .

Clear and Delete

Press DEL to delete the character under the cursor.

Press CLEAR to clear the contents of the current input line.

In the Home screen, press CLEAR CLEAR to clear the entire screen.

Troubleshooting

  1. If your screen is too light, press 2nd several times to make it darker. If it is too dark, press 2nd .
  2. For the features we use in this book, the MODE and FORMAT should be in their default settings. Press MODE to see the menu in Figure B.2a, and 2nd ZOOM to see the format menu in Figureb. Use the Arrow keys and ENTER to alter the menus to the default settings if necessary. Note: The Set Clock function does not appear on the T1-83.
    GC windows of settings

Modeling, Functions, and Graphs by Katherine Yoshiwara (yoshiwarabooks.org), GNU Free Documentation License 1.2 or later. Adapted for the XYZ HTML edition with the authors' permission (recorded 2026-07-04). License: GFDL-1.2-or-later.