Practice Problems

  1. The graphs of the equations ‍y=f(x) and ‍‍y=g(x) are shown in the grid below.

    q1

    Which of the following best approximates the value of ‍g(f(-2))?

    Choose 1 answer:

    1. -3
    2. -2
    3. 0
    4. 3
  2. The tables below show some inputs and outputs of functions ‍g and ‍h.

    x -6 -4 -2 -1 0 2
    g(x) -21 3 11 9 3 -21

    x -1 0
    2 3 4 6
    h(x) 5
    2
    2
    5
    10
    26

    Evaluate.

    (h\circ g) (0)=

  3. The tables below show some inputs and outputs of functions ‍f and ‍h.

    x -6 -4 -2 0
    2
    4
    f(x) -4 -3 -2 -1 0 1

    x -8 -4
    -2 0
    1 2
    h(x) 80
    2
    2
    10
    17
    26

    Evaluate.

    h(f(-2))=

  4. The graphs of the equations ‍y=f(x) and ‍‍y=g(x) are shown in the grid below.

    q4

    Which of the following best approximates the value of ‍(f\circ g) (3)?

    Choose 1 answer:

    1. -6
    2. -2
    3. 0
    4. 6

Source: Khan Academy, https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:composite/x9e81a4f98389efdf:composing/e/evaluate-composite-functions-from-graphs-and-tables
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