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MathMentor

Learn with Mentor · 7 min

Graph Inequalities on a Number Line

Describe a number-line graph for one-variable inequalities by choosing the correct open or closed circle and shading left or right.

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What are we learning?

A one-variable inequality such as x < -12 describes many possible x-values. A number-line graph shows those values using two decisions: what kind of circle goes on the boundary number, and which direction is shaded.