A number line shading to the right of 6 with a closed circle at 6 indicates which inequality?

A number line shading to the right of 6 with a closed circle at 6 indicates which inequality?

• A. x > 6
• B. x < 6
• C. x <= 6
• D. x >= 6

Answer: (D)

Reading a number line like this, the solid dot at the endpoint means that endpoint is included in the solutions. Shading to the right shows all numbers greater than or equal to that point. So, all numbers x that meet the condition are those at least as large as 6, which is written as x ≥ 6.

Reading a number line like this, the solid dot at the endpoint means that endpoint is included in the solutions. Shading to the right shows all numbers greater than or equal to that point. So, all numbers x that meet the condition are those at least as large as 6, which is written as x ≥ 6.