Answer: x < −2.
- A x < −2
- B x > −2
- C x < 2
- D x > 2
Correct answer: A. x < −2
Explanation: Dividing by −3 reverses the sign, giving x < −2.
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.