On a number line, how would you represent x ≥ 7?

A closed dot on 7 with an arrow pointing to the right.

Explain the difference between using an open dot versus a closed dot when graphing inequalities on a number line.

An open dot means the number is not included in the solution, while a closed dot means the number is included.

Grade 9th Grade · Math · 45 min

I can represent inequalities on a number line using open or closed circles and arrows.

Kayla Jones · 5:04

Inequalities on a Number Line

3 key concepts

1
When graphing inequalities on a number line, the symbols < and > use an open dot, while ≤ and ≥ use a closed dot.
2
When graphing x < 3 on a number line, you would put an open dot on 3 and the arrow would point to the left.
3
If a number line has a closed dot on 1 and the arrow points to the right, the inequality is x ≥ 1.

10 questions · Multiple choice & Short answer

Quick comprehension check

“Represent the inequality x ≥ 5 on a number line. Be sure to use the correct type of circle and direction of the arrow.”

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