Math 9 · Unit 4: Equations and inequalities · Cambridge Lower Secondary Maths Stage 9

Questions

1. 1. Write the inequality for this solution set.

   • x < 2
   • x ≥ 2
   • x ≤ 2
   • x > 2
   Check

2. 2. Write the inequality for this solution set.

   • x > −6
   • x ≤ −6
   • x ≥ 6
   • x ≥ −6
   Check

3. 3. Write the inequality for this solution set.

   • x ≥ 0
   • x ≤ 0
   • x < 0
   • x > 0
   Check

4. 4. Write the inequality for this solution set.

   • x ≤ 10
   • x < 10
   • x > 10
   • x ≥ 10
   Check

5. 5. Write the inequality for this solution set.

   • −8 ≤ x ≤ 0
   • −8 < x < 0
   • −8 < x ≤ 0
   • −8 ≤ x < 0
   Check

6. 6. Write the inequality for this solution set.

   • −3 ≤ x < 3
   • −3 ≤ x ≤ 3
   • −3 < x ≤ 3
   • −3 < x < 3
   Check

7. 7. N is an integer and N ≥ 8.2. What is the smallest possible value of N?

   • 8
   • 9
   • 10
   • 8.2
   Check

8. 8. N is an integer and N < −5. What is the largest possible value of N?

   • −4
   • −6
   • −5.1
   • −5
   Check

9. 9. N is an integer and −3 ≤ N < 2.5. What are the possible values?

   • −3, −2, −1, 0, 1
   • −3, −2, −1, 0, 1, 2, 3
   • −2, −1, 0, 1, 2
   • −3, −2, −1, 0, 1, 2
   Check

10. 10. N is an integer and N ≤ 4. Must N = 4 be true, could it be true, or can it not be true?

    • cannot be true
    • must be true
    • could be true
    Check

11. 11. N is an integer and N ≤ 4. Must N < 0 be true, could it be true, or can it not be true?

    • could be true
    • cannot be true
    • must be true
    Check

12. 12. N is an integer and N ≤ 4. Must N < 5 be true, could it be true, or can it not be true?

    • must be true
    • could be true
    • cannot be true
    Check

13. 13. N is an integer and N ≤ 4. Must N ≥ 5 be true, could it be true, or can it not be true?

    • must be true
    • could be true
    • cannot be true
    Check

14. 14. Complete the solution to 6x > 18. What number goes in the box?

    • 108
    • 3
    • 24
    • 12
    Check

15. 15. Copy and complete the solution to 2x − 3 < 19.

    Fill the blanks with these.

    • 38
    • 16
    • 3
    • 22
    • 11
    Check

16. 16. Copy and complete the solution to 5x + 1 ≤ −9.

    Fill the blanks with these.

    • −2
    • 1
    • 10
    • −8
    • −10
    Check

17. 17. Copy and complete the solution to 3(x − 4) ≥ 9.

    Fill the blanks with these.

    • 7
    • −3
    • 21
    • 12
    • 4
    • 36
    Check

18. 18. Solve 10x ≥ 5.

    • x ≥ 2
    • x ≥ 50
    • x ≥ 0.5
    • x ≤ 0.5
    Check

19. 19. Solve 4x + 10 < 22.

    • x < 32
    • x < 8
    • x > 3
    • x < 3
    Check

20. 20. Solve 5(x − 7) ≤ 30.

    • x ≥ 13
    • x ≤ 6
    • x ≤ 13
    • x ≤ 13.4
    Check