Answer: the intersection.
- A the intersection
- B the union
- C the difference
- D the complement
Correct answer: A. the intersection
Explanation: A system is satisfied only where all the individual regions overlap, i.e. their intersection.
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.