TI-Nspire For Dummies
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As with single-variable data sets, on the TI-Nspire you can plot a value on a scatter plot that is displayed as a vertical line perpendicular to the x-axis at a point equal to the specified value. To access the Plot Value feature, press [MENU]→Analyze→Plot Value. At the prompt, type the value (or expression that yields a numerical value) and press [ENTER] to draw the vertical line associated with the value.

You can plot a single number or an expression that equals a number. Statistical values such as mean or standard deviation are good choices for the Plot Value feature.

To remove a plotted value, move the cursor over the vertical line and right-click ([CTRL][MENU]); then choose Remove Plotted Value (or [CLICK][DEL]).

Sometimes, the best fit for data is an exponential function. To graph a function, press [MENU]→Analyze→Plot Function. Enter the function at the prompt, and press [ENTER] to view the graph.

How to add a slider to a graph on TI-Nspire

To get really fancy, try adding sliders to your graph (press [MENU]→Actions→Insert Slider). In the first screen, two minimized sliders are created, one to manipulate the value of a in the function y = abx and one to manipulate the value of b in the function y = abx.


In the second screen, the Plot Function tool is opened and the function a@@dmsbx was typed at the prompt. The boldface letters indicate stored variables defined in the sliders. The third screen shows an attempt to get a nice match for the data set.

How to shade under a function on TI-Nspire

Press [MENU]→Analyze→Shade Under Function to shade under a function. Then follow these steps:

  1. Move the cursor to a desired location and press [CLICK] to set the left bound of the shaded region.

    Observe the dotted line and the number indicating the current x-value.

  2. Move the cursor to a desired location and press [CLICK] to set the right bound of the shaded region.

  3. A shaded region appears along with a number representing the area of the region.

    Click and drag the left or right side of the shaded region to change the endpoints.


About This Article

This article is from the book:

About the book authors:

Jeff McCalla teaches Algebra 2 and Pre-Calculus at St. Mary's Episcopal School in Memphis. He is a T3 instructor for Texas Instruments and co- founder of the TI-Nspire SuperUser group. Steve Ouellette wrote the first edition of TI-Nspire For Dummies as well as CliffsNotes® Guide to TI-Nspire.

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