Answer: -1 <= x < 5.
- A -1 <= x < 5
- B -4 <= x < 2
- C -1 < x <= 5
- D 1 <= x < 5
Correct answer: A. -1 <= x < 5
Explanation: Add 3 to all parts: -2 <= 2x < 10. Divide by 2: -1 <= x < 5.
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.