Goal: Graph an inequality on the number line.
1. Type or paste an inequality in x in the box. Hit Enter. You can type <= for ≤ and >= for ≥ . Values on the red ray make the inequality "true".
Other examples: x+3≤5, 2x+1>4, 3>=4x/5-11/5
2. To change the view, click on the Move tool 
and then click and drag the number line as desired.
• An open endpoint means NO "=" in the inequality.
3. Find the value of any point on the red ray. On a piece of paper, substitute this value for x into the inequality. The inequality should be "true".
4. Find the value of any point NOT on the red ray. On a piece of paper, substitute this value for x into the inequality. The inequality should be "false".
• To start over, enter a new inequality and hit Enter.