Answers Mathematics III Inequalities — QuizQuestion 9

9

QuizMultiple Choice

Inequalities — Quiz

Question 9 • Mathematics III

Which graph represents the solution set of the inequality x plus 2 is greater than or equal to 6 ?

Answer

A

Image with description A number line lists negative 9 to 9 by 1. An open circle is on 3. An arrow goes to the right of 3.

B

Image with description A number line lists negative 9 to 9 by 1. A closed circle is on 3. An arrow goes to the left of 3.

C

Image with description A number line lists negative 9 to 9 by 1. An open circle is on 4. An arrow goes to the left of 4.

D

Image with description A number line lists negative 9 to 9 by 1. A closed circle is on 4. An arrow goes to the right of 4.

Explanation

Subtract 2 from both sides of x + 2 ≥ 6 to get x ≥ 4. The solution includes 4, so the graph needs a closed circle at 4, with an arrow pointing right for values greater than 4. That is choice D.

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