Precalc Unit2a

15 Questions

Settings
Please wait...
Fraction Quizzes & Trivia

Pretest 01


Questions and Answers
  • 1. 
    Simplify the following expression:     
    • A. 

      -(3x + 8)//7

    • B. 

      2 + 3x/5

    • C. 

      (3x + 10)/15

    • D. 

      (3x + 10)/45

    • E. 

      None of the other answers

  • 2. 
    Which of the following is the solution set for for the equation |5x - 3| = 22 (|...| denotes absolute value).
    • A. 

      {25}

    • B. 

      {25, -19}

    • C. 

      {5, -3.8}

    • D. 

      {5}

    • E. 

      None of the other answers

  • 3. 
    • A. 

      { -1, 3}

    • B. 

      { -3, 1}

    • C. 

      {-1, 0, 3}

    • D. 

      None of the other answers

    • E. 

      {-3, 0, 1}

  • 4. 
    • A. 

      None of the other answers

    • B. 

      {x| x > -3}

    • C. 

      {x| x ╪ -3}

    • D. 

      {x| x ≥ -3}

    • E. 

      {x| x ╪ 3}

  • 5. 
    Determine the slope-intercept form of the equation of the straight line with slope 2 and containing the point (-4, -4)
    • A. 

      Y = 2x + 4

    • B. 

      Y = -2x - 4

    • C. 

      Y = 2x - 4

    • D. 

      Y = -2x +4

    • E. 

      None of the other answers

  • 6. 
    Given the piecewise-defined function:          { 3 if x > 2 f(x) = {          { x2 + 3 if x < 2 Give the domain and range of f.
    • A. 

      Domain: {x | x ╪ 2}; Range {y | y ≥ 3}

    • B. 

      Domain: {x | x ╪ 2}; Range {y | y > 3}

    • C. 

      Domain: {x | x > 2}; Range {y | y ≥ 3}

    • D. 

      Domain: {x | x > 2}; Range {y | y < 3}

    • E. 

      None of the other answers

  • 7. 
  • 8. 
    Compute the discriminant (  ) of the quadratic equation
  • 9. 
    Find the slope of the line passing through the points (-1, -2) and (11, 5). (Give your ans to one place of dec.)
  • 10. 
    Given the functions f(x) = 1/x and g(x) = √x, determine which of the following evaluations is the smallest. (Select one answer only)
    • A. 

      (f+g)(1/4)

    • B. 

      (f/g)(1/4)

    • C. 

      F(g(1/4))

    • D. 

      (f - g)(1/4)

    • E. 

      None of the other answers

  • 11. 
    For two functions f and g to be inverses of each other, what two conditions must be met. (Select TWO answers only.)
    • A. 

      F(g(x)) = g(f(x)) = x

    • B. 

      F(g(x)) = g(f(x))

    • C. 

      F and g must be 1-1 functions

    • D. 

      (fg)(x) = x

    • E. 

      F(x) = 1/g(x) and vice-versa

  • 12. 
    • A. 

      None of the other answers

    • B. 

      {x| x > -5}

    • C. 

      {x| x ╪ -5}

    • D. 

      {x| x ≥ -3}

    • E. 

      {x| x ╪ 5}

  • 13. 
    Find the slope-intercept form of the equation of the straight line that is perpendicular to the  line  4x - y = 4 and that passes through the point (0, 1)
    • A. 

      Y = -x/4 + 1

    • B. 

      Y = -x/4 + 4

    • C. 

      Y = -x + 4

    • D. 

      Y = x/4 + 1

    • E. 

      None of the other answers

  • 14. 
    Simplify (logb10) / (log10b) A. 2 (logb10)  B.  1/[(log10b)(log10b)] C. (logb10) (log10b) D.  2(log10b)
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

    • E. 

      None of the other answers

  • 15. 
    Determine the difference quotient [f(x+h) - f(x)]/h for the function: f(x) = x2 - x
    • A. 

      2x- 1

    • B. 

      2x - 1 + h

    • C. 

      (2x - 1)/h

    • D. 

      H -1

    • E. 

      None of the other answers