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Introduction to Functions Practice Test

By — McGraw-Hill Professional
Updated on Oct 4, 2011

Review the following concepts if needed:

Introduction to Functions Practice Test

Problems

  1. Evaluate f ( x ) = 4 − 2 x 2 at x = 3.

    (a) −14

    (b) −12

    (c) −10

    (d) −8

  2. Evaluate f (−1) for

    Introduction to Functions Chapter 2 Review

    (a) −1

    (b) 5

    (c) 2

    (d) 2,5

  3. Evaluate f ( u 2 + v ) for f ( x ) = 4 x + 6.

    (a) ( u 2 + v )(4 x + 6)

    (b) 4 u 2 + v + 6

    (c) 4 v 2 x + 6

    (d) 4 u 2 + 4 v + 6

  4. What is the domain for Introduction to Functions Chapter 2 Review

    (a) (−∞,∞)

    (b) (−∞, −1] ∪ [1, ∞)

    (c) (−∞, −1) ∪ (1, ∞)

    (d) [−1,1]

  5. Evaluate Introduction to Functions Chapter 2 Review for f(x) = x 2 + 3.

    (a) 2 a + h 2

    (b) 2 a + h 2 + 3

    (c) 2 a + h

    (d) 2 a + h + 3

  6. What is the domain for Introduction to Functions Chapter 2 Review

    (a) (−∞, 5) ∪ (5, ∞)

    (b) [5, ∞)

    (c) (−∞, 5]

    (d) (−∞, −5) ∪ (5, ∞)

  7. What is the domain for Introduction to Functions Chapter 2 Review

    (a) (−∞, 9) ∪ (9, ∞)

    (b) (−∞, 3) ∪ (3, ∞)

    (c) [3, ∞)

    (d) (−∞, −3)∪(−3, 3) ∪ (3, ∞).

  8. What is the domain for the function {( a , 6), ( b , 6), ( d , 9)}

    (a) { a, b, d }

    (b) {6, 9}

    (c) { a, b, d , 6, 9}

    (d) { a, b, d , 9}

  9. What is the domain for

    Introduction to Functions Chapter 2 Review

    (a) [4, 5) ∪ (5, ∞)

    (b) (−∞, 4) ∪ (4, ∞)

    (c) [4, ∞)

    (d) (4, ∞)

  10. What is the domain for

    Introduction to Functions Chapter 2 Review

    (a) [4, 5) ∪ (5, ∞)

    (b) (−∞, 4) ∪ (4, ∞)

    (c) [4, ∞)

    (d) (4, ∞)

Solutions

  1. A
  2. B
  3. D
  4. A
  5. B
  6. D
  7. A
  8. D
  9. A

     

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