# Chapter 1 Study Guide

10 Questions | Total Attempts: 32  Settings  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).
• 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.
• 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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