Answer: x ≤ 3.
- A x ≤ 3
- B x ≥ 3
- C x ≤ 4
- D x ≥ 4
Correct answer: A. x ≤ 3
Explanation: Subtract 1 then divide by 2: 2x ≤ 6, so 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.