Chapter 1 Study Guide

10 Questions

Settings
Chapter 1 Study Guide

MAT 150 - Functions, Graphs & Models: Linear Functions This study guide is 10 questions graded on correctness. You make take the quiz as many times as you like and I will assign you the highest score. Your scores will go to your email acount so make sure you save this for your records.


Questions and Answers
  • 1. 
    If , find C(3) and C(-2).
    • A. 

      -2 and -8

    • B. 

      -2 and 8

    • C. 

      2 and 8

    • D. 

      2 and -8

  • 2. 
    Graph  on your graphing calculator.  What is the domain and range?
    • A. 

      D: [-3, 1] R: (- infinity, 5]

    • B. 

      D: (- infinity, infinity), R: (- infinity, -1]

    • C. 

      D: (- infinity, infinity), R: (- infinity, 5)

    • D. 

      D: (- infinity, infinity), R: (- infinity, 5]

  • 3. 
    Find the slope of the line through (-4, 6) ad (8, -16).
    • A. 

      -11/6

    • B. 

      -6/11

    • C. 

      5/6

    • D. 

      6/5

  • 4. 
    Find the slope of 2x - 3y = 7.
    • A. 

      -2/3

    • B. 

      -2

    • C. 

      2/3

    • D. 

      2

  • 5. 
    Write the equation of a line that has slope 4 and y-intercept 6.
    • A. 

      Y = 6x + 4

    • B. 

      Y = 4x + 6

    • C. 

      4x + 6y = 10

    • D. 

      Y = 4x - 6

  • 6. 
    Write the equation of the line that has slope  and passes through (4, -6).
    • A. 

      Y = -3/4 x - 3

    • B. 

      Y = -3/4 x - 10

    • C. 

      Y = -3/4 x + 9

    • D. 

      Y = -3/4 x - 1/2

  • 7. 
    Write the equation of the line that passes through (-8, 3) and is perpendicular to the line 4x + 3y = 6.
    • A. 

      Y = -4/3 x - 23/3

    • B. 

      Y = -3/4 x - 3

    • C. 

      Y = 3/4 x + 3

    • D. 

      Y = 3/4 x + 9

  • 8. 
    Teacher Salaries  The average salary of a classroom teacher in the United States is given by f(x) = 982.06x + 32903.77, where x is the number of years after 1990.  What is the average salary in 2005 according to this equation?
    • A. 

      $48,616.73

    • B. 

      $2001934.07

    • C. 

      $47,634.67

    • D. 

      $37814.07

  • 9. 
    • A. 

      Y = 10x + 2.99

    • B. 

      Y = 2.99x + .10

    • C. 

      Y = .10x + 2.99

    • D. 

      Y = 2.99x + .10x

  • 10. 
    Go to pg 80 and do #29 b and c.
    • A. 

      B. f(25000) = 448.11. $448.11 is the payment to borrow $25,000. C. A = 20,000

    • B. 

      B. f(25000) = 448.11. $448.11 is the monthly payment to borrow $25,000. C. A = 20,000

    • C. 

      B. f(25000) = 448.11. $448.11 is the monthly payment to borrow $25,000. C. A = 15,000

    • D. 

      B. f(25000) = 537.73. $537.73 is the monthly payment to borrow $25,000. C. A = 20,000