Quiz  /  Internal Trade Class 9 MCQ Questions With Answers

  • 1. 
    Write the following in interval notationx < 3 or x ≥ 5

  • (3, -∞) or (∞, 5]
  • [-∞, 3) or [5, ∞]
  • (-∞, 3) or [5, ∞)
  • (3, -∞] or [∞, 5]

  • 2. 
    Express the following interval in Set notation:(-7, 15]

  • -7 ≤ x ≤ 15
  • -7 < x ≤ 15
  • -7 ≤ x < 15
  • -7 < x < 15

  • 3. 
    Look at the graph. Write the inequality in interval notation.

  • (-2,5)
  • (-∞,-2)⋃(5,∞)
  • [-2,5]
  • (-∞,-2]∪[5,∞)

  • 4. 
    Write the following in interval notationx ≥ 100

  • (0, 100]  (Real quick)
  • (∞, 100]
  • [100, ∞)
  • (∞, 100)

  • 5. 
    Express the following interval in Set notation:[3, 5]

  • 3 ≤ x ≤ 5
  • 3 < x ≤ 5
  • 3 ≤ x < 5
  • 3 < x < 5

  • 6. 
    Look at the picture. Select the correct interval notation for the given number line.

  • (-∞, -8) U (-4, ∞)
  • (-∞, -8] U [-4, ∞)
  • (-8, -4)
  • [-8, -4]

  • 7. 
    Look at the picture. Which graph best represents the solution set (-∞, -2) U (5, ∞)?

  • Graph 1
  • Graph 2
  • Graph 3
  • Graph 4

  • 8. 
    (-2,12) can be written in inequality notation as:

  • -2 < x > 12
  • -2 > x > 12
  • -2 < x <12
  • None of these

  • 9. 
    Look at the picture. Which number line corresponds to [-2, 5]?

  • Graph 1
  • Graph 2
  • Graph 3
  • Graph 4

  • 10. 
    Express the following in Interval Notation -9 < x ≤ -4

  • [-9, -4]
  • (-9,-4]
  • [-9, -4]
  • (-9,-4)

  • 11. 
    Write the following in interval notationx > 6 and x ≤ 10

  • (-∞, 6) and (10, ∞)
  • [6, 10)
  • (-∞, 6] and [10, ∞)
  • (6, 10]

  • 12. 
    Write the following in interval notation-7 ≤ x < 8

  • (-7, 8)
  • [-7, 8)
  • [-7, 8]
  • (-7, 8]

  • 13. 
    Express the following in Interval Notation-9 < x < -8.5

  • [-9, -8.5]
  • [-9, -8.5)
  • (-9, -8.5]
  • (-9, -8.5)

  • 14. 
    Express the following interval in Set notation:[14.2, 19.6)

  • 14.2 ≤ x ≤ 19.6
  • 14.2 < x ≤ 19.6
  • 14.2 ≤ x < 19.6
  • 14.2 < x < 19.6

  • 15. 
    Express the following in Interval Notation-9 < x ≤ -4

  • [-9, -4]
  • (-9,-4]
  • [-9, -4]
  • (-9,-4)

  • 16. 
    When graphing b< 6 would you use an open or closed circle?

  • open
  • closed

  • 17. 
    Express the following interval in Set notation:(-63, -62)

  • -63 ≤ x ≤ -62
  • -63 < x ≤ -62
  • -63 ≤ x < -62
  • -63 < x < -62

  • 18. 
    Write the following in interval notation x < 8

  • (8, ∞)
  • (8, -∞)
  • (-∞, 8)
  • [-∞, 8]
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