Quiz : How Much Do You Know About Functions And Function Notation

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  • 1/10 Questions

    G(x) = 2x + 8             g(3)

    • 14
    • 12
    • 12
    • None of the above
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About This Quiz

Functions are an important concept in mathematics. Just how much do you know about functions and function notation? If you think you know enough wouldn't it be fun to take a quiz and test your knowledge about it? Why not give it a try? Please make sure to read all the questions very carefully before answering. Interestingly, the quiz can help you prepare well for your upcoming examinations in a fun way. So, make sure to attempt all the questions. If you get stuck, you are allowed to refer to your solutions book for help Good Luck!

Quiz : How Much Do You Know About Functions And Function Notation - Quiz

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  • 2. 

    F(x) = - 2x + 4             f(- 3)

    • 10

    • 16

    • 125

    • None of the above

    Correct Answer
    A. 10
    Explanation
    To find the value of f(-3), we substitute -3 into the equation f(x) = -2x + 4. This gives us f(-3) = -2(-3) + 4 = 6 + 4 = 10. Therefore, the correct answer is 10.

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  • 3. 

    H(x) = - 3x + 2             h(7)

    • -21

    • -19

    • 19

    • None of the above

    Correct Answer
    A. -19
    Explanation
    To find the value of h(7), we substitute 7 into the function h(x). So, h(7) = -3(7) + 2 = -21 + 2 = -19. Therefore, the correct answer is -19.

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  • 4. 

    F(x) = 4x - 3             f(2)

    • 7

    • 2

    • 5

    • None of the above

    Correct Answer
    A. 5
    Explanation
    To find the value of f(2), we substitute 2 into the function f(x) = 4x - 3. Therefore, f(2) = 4(2) - 3 = 8 - 3 = 5.

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  • 5. 

    What is the range of the following relation: (9, -2) (4, 3)  ( 8, 10) ( -4, 8)

    • -2, 3, 8, 10

    • (9, -2) ( 4, 3)

    • (8, 10) (-4, 8)

    • -4, 4, 8, 9

    Correct Answer
    A. -2, 3, 8, 10
    Explanation
    The range of a relation refers to the set of all possible y-values or second coordinates in the relation. In this case, the given relation consists of four ordered pairs: (9, -2), (4, 3), (8, 10), and (-4, 8). The second coordinates of these ordered pairs are -2, 3, 10, and 8, respectively. Therefore, the range of the given relation is -2, 3, 10, and 8.

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  • 6. 

    Given f(x) = -4x - 10 and f(x) = 10. Find x

    • X = -5

    • X = 5

    • X = -50

    • X = 30

    Correct Answer
    A. X = -5
    Explanation
    To find the value of x, we need to equate the given function f(x) to 10 and solve for x. By substituting 10 for f(x) in the equation -4x - 10 = 10, we get -4x = 20. Dividing both sides by -4, we find x = -5. Therefore, the correct answer is x = -5.

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  • 7. 

    H(x)  =  5x - 4             h()             36

    • 8

    • 9

    • 12

    • None of the above

    Correct Answer
    A. 8
    Explanation
    Given the function:
    h(x) = 5x - 4
    We are told:
    h(?) = 36
    To find x, set the equation:
    5x - 4 = 36
    Add 4 to both sides:
    5x = 40
    Divide both sides by 5:
    x = 8
    Correct Answer: 8

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  • 8. 

    Evaluate f(-2) if f(x) = -1/2x + 3

    • 2

    • -2

    • -1

    • 4

    Correct Answer
    A. 4
    Explanation
    To evaluate f(-2), we substitute -2 into the function f(x) = -1/2x + 3. So, f(-2) = -1/2(-2) + 3 = 1 + 3 = 4.

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  • 9. 

    G(x) =             g(6)             11

    • X-6

    • X+11

    • X-5

    • None of the above

    Correct Answer
    A. None of the above
    Explanation
    Given:
    g(x) = ?
    g(6) = 11
    Try each option:
    A. x - 6 → g(6) = 6 - 6 = 0
    B. x + 11 → g(6) = 6 + 11 = 17
    C. x - 5 → g(6) = 6 - 5 = 1
    None of the options equal 11.
    Correct answer: None of the above

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  • 10. 

    Evaluate f(-2) if f(x) = x2+ 3

    • -1

    • 1

    • 7

    • -7

    Correct Answer
    A. 7
    Explanation
    To evaluate f(-2), we substitute -2 for x in the given function f(x) = x^2 + 3. Thus, f(-2) = (-2)^2 + 3 = 4 + 3 = 7. Therefore, the correct answer is 7.

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  • Current Version
  • Jun 24, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • May 30, 2011
    Quiz Created by
    Benlaing
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