Answer: −3 < x < 3.
- A −3 < x < 3
- B x > 3
- C x < −3
- D x > 3 or x < −3
Correct answer: A. −3 < x < 3
Explanation: |x| < 3 means x lies within 3 of zero, i.e. −3 < x < 3.
One-variable inequalities use open (excluded) or closed (included) circles on a number line; two-variable inequalities use a dashed (strict) or solid (non-strict) boundary line, with the solution being the entire shaded half-plane on one side of it.
Concept context
Solving linear inequalities in one and two variables algebraically and graphically, and representing solutions on a number line or as a region in a plane.