Using a number line allows you to represent both positive and negative numbers. The numbers are placed at equal intervals along the length of the line. The number line also is very convenient for comparing number. It is important to remember that a number line can be extended indefinitely in a horizontal direction. To create a number line in Equatio mathspace, click on the Smart Shapes icon and select the Number Line. Then, click on anywhere in the mathspace to begin dragging your mouse to size of the number line that you need. With the object still selected, a toolbar will pop up on the right hand side. This will allow you to select the number of ticks and the width of the number line.