**Some conventions that need to be remembered when graphing on a number line are explained below.**

**1. An open circle is placed on the number line to show that the number denoted at the circle is**

2. A circle that is filled in is placed on the number line to show that the number denoted at the circle

*not*included in the solution set.2. A circle that is filled in is placed on the number line to show that the number denoted at the circle

*is*included in the solution set.

**3. Draw arrow on the left only.**

**4. For a range of values:**

**example Graph: x < 4**

Solution:The problem asks you to graph all numbers that areless than4.