To graph a vertical line using Inequality Graphing App, follow these steps:

Example: X \(>=\) -4

1.    Select the Inequality Graphing App icon .

2.    Press the [y=] key to toggle between y= entries and x= entries.

3.    In an x= entry line, enter a value to graph.

4.    If necessary, use the left arrow key ‹ to the line and color indicator and press = to edit.

5.    Once the desired color and relation are selected, choose OK.

6.    Press h a view the vertical line or inequality.