Chapter 1 Study Guide
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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.
- 1.
![If , find C(3) and C(-2). - ProProfs]( "If , find C(3) and C(-2).")
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? - ProProfs]( "Graph on your graphing calculator. What is the domain and range?")
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). - ProProfs]( "Write the equation of the line that has slope and passes through (4, -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.
- 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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