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Grade 11 · Equations and Inequalities
Quadratic Inequalities (Grade 11)
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Mark
/ 18
Answer all questions. Show all your working — marks are awarded for method as well as the final answer.
- 1Solve x² − x − 6 > 0(3)
- 2Solve x² − x − 6 ≤ 0(3)
- 3Solve x² − 9 < 0(2)
- 4Solve x² − 4 ≥ 0(2)
- 5Solve x² + 5x + 6 < 0(3)
- 6Solve x² − 5x > 0(2)
- 7Solve −x² + 4 > 0(2)
- 8Write x < −1 or x > 4 in interval notation.(1)
TOTAL: 18 marks