Chapter 1 Study Guide

10 Questions | By Sajones7668 | Last updated: Jul 19, 2013

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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.

Phone Bills For interstate calls, AT&T charges 10 cents per minute plus a base charge of $2.99 each month. Write an equation for the monthly charge y as a funtion of the number of minutes of use.

Discuss
- 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

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