9
QuizMultiple Choice

Solving One-Variable Inequalities — Quiz

Question 9 • Algebra I

Which are correct representations of the inequality 6 x is greater than or equal to 3 plus 4 times open paren 2 x minus 1 close paren ? Choose three correct answers.

Answer
A
6 x is greater than or equal to 3 plus 8 x minus 4
B
Image with description A number line from negative 1 point 5 to positive 1 point 5 in increments of 0 point 5. A solid point is at positive 0 point 5 and a bold line starts at positive 0 point 5 and is pointing to the right.
C
Image with description A number line from negative 1 point 5 to positive 1 point 5 in increments of 0 point 5. A solid point is at positive 0 point 5 and a bold line starts at positive 0 point 5 and is pointing to the left.
D
Image with description A number line from negative 1 point 5 to positive 1 point 5 in increments of 0 point 5. A solid point is at negative 0 point 5 and a bold line starts at negative 0 point 5 and is pointing to the right.
E
1 is greater than or equal to 2 x

Explanation

Distribute 4 in the original inequality: 3 + 4(2x − 1) = 3 + 8x − 4, so choice A is equivalent. Simplifying 6x ≥ 8x − 1 gives 1 ≥ 2x, or x ≤ 0.5, which is choice E. On a number line, x ≤ 0.5 is shown by a solid point at 0.5 with shading to the left, as in choice C.

AI-written and checked against the verified answer.

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