Answer: x < 3.
- A x < 3
- B x > 3
- C x < -3
- D x > -3
Correct answer: A. x < 3
Explanation: 7x - 5x < 9 - 3, so 2x < 6, giving 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.