Number Line Inequality

Each side of the inequality is calculated using the red value of x. On the lower number line, the value of the left side is marked with a green triangle and the value of the right side is marked with a blue triangle.

Drag the red point to change the value of x. When are the two side equal?

Drag x so that it lies in a location that makes the inequality true and press Trace Point x. Drag x to show the solution to the inequality. To erase the traces, click on the red X in the lower-right corner.

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