Number Line Interaction
The Graphing Number Line Function Interaction is not one of the Portable Custom Interactions in the standard TAO package. It will need to be installed in a separate extension.
A Graphing Number Line interaction is useful if you would like the Test-taker to visually represent an interval on a graduated line.
![](https://www.taotesting.com/wp-content/uploads/2021/03/number-line-300x124.png)
If you wish to use the Graphing Number Line interaction, the corresponding extension will need to be installed first. See the chapter on the Extensions Manager for information on how to do this, or ask your systems administrator about the installation of this extension.