# Chapter 1 Quiz: Linear Functions

10 Questions | Total Attempts: 165  Settings  It is no lie that mathematics is one of the most disliked topics by students today. People tend to fear algebra and calculus even before they start learning on them. Have you been having some problems when it comes to solving linear equations? The quiz below is designed to help you polish out your skills as it gives you some practice activities on functions, graphs and models. Give it a shot!

• 1.
Given , find C(2) and C(-4).
• A.

0 and -24

• B.

16 and 40

• C.

0 and 40

• D.

-16 and -24

• 2.
Graph   on your graphing calculator and then give the domain and range.
• A.

D: [-2, 2] R: (-infinity, 6]

• B.

D: (-infinity, infinity) R: (-infinity, 6]

• C.

D: (-infinity, infinity) R: [6, infinity)

• D.

D: (-infinity, infinity) R: (-infinity, 6)

• 3.
Find the slope through the points (4, -2) and (-1, 6).
• A.

-5/8

• B.

8/5

• C.

-8/5

• D.

-3

• 4.
Find the slope of the linear equation:
• A.

2

• B.

-1/2

• C.

-6

• D.

-2

• 5.
Write the equation of the line given slope of 5 and y-intercept of -2.
• A.

Y = 5x - 2

• B.

Y = -2x + 5

• C.

Y = 5x + 2

• D.

5x - 2y = 3

• 6.
Write the equation of a line with slope  and through the point (9, -3).
• A.

Y = 2/3 x - 6

• B.

Y = 2/3 x - 9

• C.

Y = 2/3 x - 3

• D.

Y = 2/3 x + 3

• 7.
Write the equation of the line through the point (-1, 5) and perpendicular to the line 4x + y = 6.
• A.

Y = 1/4 x + 6

• B.

Y = -4x + 1

• C.

Y = 1/4 x + 21/4

• D.

Y = -1/4 x + 19/4

• 8.
Personal Savings  Using data from 1960 to 2009, th personal savings rate (as a percent of disposable income) of Americans can be modeled by the function  where x is the number of years after 1960.  Use the model to estimate the personal savings rate in 2013 to the nearest tenth.
• A.

574%

• B.

3670265.7%

• C.

5.2%

• D.

5.7%

• 9.
Cable Bill  A cable complany charges and flat monthly fee of \$95 for basic channels and an additional \$7 for each premium channel.  Write an equation to model the cable company's monthly fees.
• A.

Y = 7x + 95

• B.

Y = 95x + 7

• C.

Y = 102x

• D.

Y = 7x

• 10.
Blood Alcohol Percent  Using the table on pg 72 #49, what does f(4) equal?  Tell what this represents in this situation.
• A.

F(4) = 0.18; With 4 drinks there is a blood alcohol percent of 0.18.

• B.

F(4) = 0.18; When a 100 pound woman has 4 alcoholic beverages, she has a blood alcohol percent of 0.18.

• C.

F(4) = 0.18; With 4 alcoholic drinks a person will have a blood alcohol percent of 0.18.

• D.

F(4) = 0.18; The average rate of change in blood alcohol percent is 0.18 for a 100 pound woman who has 4 alcoholic drinks.

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