To add points to a number line graph:
Insert a number line graph or edit an existing graph by double-clicking it. The Number Line Graph dialog box opens.
In the Layers section, click Add.
Select Point in the Add Number Line Layer dialog box and then click OK.
Enter the Coordinate for the point.
Select a Style for the point.
Enter an optional Label for the point.
Note: You can format the text using HTML text.
Select Show coordinate to display the location of the point.
Select a Color for the point.
If you want the layer to display only if a certain condition is met, enter an equation or a variable that evaluates to true or false into the Show if field. .
Note: When entering variables, enclose the variable name in two opening and two closing number signs (for example, ##var1## = 3). The variable you reference must be defined for the question or the preface associated with the question.
Click OK.