Friday, August 9, 2013

Graph Vertical Lines on Ti84

Graphing calculators simplify the graphing process immensely. Once students begin Algebra II, Texas Instruments' graphing calculators become a fundamental part of the everyday class materials. Since the late 1990s, the preferred calculators for high school students have been the TI-83 and TI-84, both of which function nearly identically. They can graph everything from basic linear functions to complex trigonometric equations. Although most students find it difficult to create vertical lines on the TI-84, the calculator can even do this with the help of a little ingenuity.

Instructions
1. Press the "On" key followed by "2nd" and "Quit" to the right of the "2nd" key. This will return you to your home screen, where you can perform basic operations.

2. Press "Clear" to erase any unnecessary information on your home screen.
    
3. Press "2nd" followed by "Draw," which is located under the "Pgrm" key.

4. Press the "4" button or select "Vertical" and press "Enter" to activate the vertical lines option. You should now have the word "Vertical" displayed on your home screen.

5. Enter a value corresponding to the vertical line you desire. For example, if you wish to draw x = -3 on your calculator, then you should press the following: "-", "3" and "Enter." Your calculator will then draw the vertical line on the coordinate axis and display it for you.



Tips & Warnings
- To erase your vertical line, press "2nd", "Draw" and "Enter."
- If your graph contains other lines or functions, you may need to press "Y=" and clear any equations previously stored into the calculator.

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