Answer: Half-plane.
- A Line segment
- B Half-plane
- C Single point
- D Circle
Correct answer: B. Half-plane
Explanation: A linear inequality in two variables divides the plane into two half-planes; the solution set is one of these half-planes.
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.