Inserting a Number Line Graph

A number line is a straight line on which every point is assumed to correspond to a real number and every real number to a point. 

To insert a number line graph:

1. Position the cursor at the location where you want to insert the number line.

2. On the Insert menu, click Graphs and then click Insert Number Line Graph. The Number Line Graph dialog box opens.

3. Enter the Width of the graph in inches.
   
   Note: The maximum width is 8 inches. The value can include decimals.

4. Enter the Height of the graph in inches.
   
   Note: The maximum height is 8 inches. The value can include decimals.

5. Enter the Title for the X-Axis.
   Note: You can format the text using HTML text.

6. By default, the axis title is left-aligned and italicized. You can use the Center Title and Italicize Title check boxes change these defaults.

7. Enter the starting and ending points for the line in the Begin and End fields.

8. Select a Color for the x-axis.

9. Select a color from Grid Line Color to display grid lines.

10. Enter a value in the Interval to set the scale between major tick marks along the line. If you do not specify an Interval, the system will select an interval.  
    
    Note: The maximum number of major tick marks is 50 along the entire length of the axis. For example, if the range of the x-axis is -50 to 50 (a span of 100 units) and you set the Interval to 2 (i.e., ticks at 2, 4, 6, etc.), the axis will have 25 major ticks in the positive and 25 major ticks in negative part of the axis for a total of 50 major ticks (100/2). If you set the interval to 1 (i.e., ticks at 1, 2, 3, etc.), you will not see any additional major ticks because that interval would produce 100 ticks (100/1).

11. Enter the number of tick marks to display between the major tick marks in the Minor Tick Count.
    
    Note: The maximum number of minor ticks is 100 along the entire length of the axis. For example, if you have an axis that runs from 0 to 20, you could enter up to 5 in the Minor Tick Count field (20 x 5).

12. By default, each axis shows the axis lines, end arrows, tick marks, and tick-mark labels. You can choose to show or hide these using the Show Line, Show Arrows, Show Major Tick Marks, and Show Labels check boxes.  

13. Click Add to add a layer to the graph. You can any of the following as a layer:
    Box and Whisker
    Line
    Point
    Ray
    Segment
    Vector

14. Use the Up and Down buttons to control the arrangement of the layers.

15. To make a copy of an existing layer, select the layer and then click Duplicate.

16. Click OK to insert the graph.