AnswersCommon Core Algebra I - MA3109 CRUnit Test

Introduction to Linear Functions Answers

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1
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Question text not available

Question illustration
A
a = 2
B
a = 3
C
a = 19
D
a = 35
2
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Which pairs of variables have a linear relationship? Select two options.

A
side length and perimeter of 1 face
B
perimeter of 1 face and area of 1 face
C
surface area and volume
D
area of 1 face and surface area
E
side length and volume
3

Question text not available

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
4

The table shows the distance traveled over time while traveling at a constant speed.

Question illustration
A
minutes per meter
Option A
B
minutes per meter
Option B
C
900 meters per minute
D
1,200 meters per minute
5

The graph shows the increase in temperature over time in an oven.

Question illustration
A
The change in the y-values is 40 and the change in the x-values is 1.
B
The change in the y-values is 1 and the change in the x-values is 40.
C
The change in the y-values is 150 and the change in the x-values is 2.
D
The change in the y-values is 190 and the change in the x-values is 3.
6

The table shows the distance traveled over time while traveling at a constant speed.

Question illustration
A
minutes per meter
Option A
B
minutes per meter
Option B
C
900 meters per minute
D
1,200 meters per minute
7

A data set contains an independent and a dependent variable. Which must be true of the data set if a linear function can be used to represent the data?

A
The set must have a constant additive rate of change.
B
The set must have a constant multiplicative rate of change.
C
The values in the set must be positive.
D
The values in the set must be increasing.
8

The table shows the number of songs that were downloaded and the total cost for buying the songs.

Question illustration
A
2 songs for $1
B
$2 per song
C
4 songs for $1
D
$4 per song
9

Which table represents a linear function?

A
Option
B
Option
C
Option
D
Option
10

The final cost of a sale item is determined by multiplying the price on the tag by 75%. Which best describes the function that represents the situation?

Question illustration
A
It is linear because the ratio of the change in the final cost compared to the rate of change in the price tag is constant.
B
It is linear because the function is continuous.
C
It is nonlinear because the final cost is determined by multiplying each price tag by 0.75.
D
It is nonlinear because the price tag and final cost columns do not have the same common difference.
11

Question text not available

Question illustration
A
a = 3
B
a = 8
C
a = 18
D
a = 33
12

Megan and Suzanne each have a plant. They track the growth of their plants for four weeks. Whose plant grew at a faster rate, and what was the rate?

Question illustration
A
Suzanne’s at 2 inches per week
B
Suzanne’s at 1.5 inches per week
C
Megan’s at 3 inches per week
D
Megan’s at 2.5 inches per week
13

Which table represents a linear function?

A
Option
B
Option
C
Option
D
Option
14

Elena agrees to finish a knitting project for a friend. The graph shows the number of rows Elena completes compared to the amount of time spent knitting.

Question illustration
A
12
B
14
C
15
D
19
15

Which functions have an additive rate of change of 3? Select two options.

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
E
Option
Option E
16

The table shows the number of songs that were downloaded and the total cost for buying the songs.

Question illustration
A
2 songs for $1
B
$2 per song
C
4 songs for $1
D
$4 per song
17

Megan and Suzanne each have a plant. They track the growth of their plants for four weeks. Whose plant grew at a faster rate, and what was the rate?

Question illustration
A
Suzanne’s at 2 inches per week
B
Suzanne’s at 1.5 inches per week
C
Megan’s at 3 inches per week
D
Megan’s at 2.5 inches per week
18

A data set contains an independent and a dependent variable. Which must be true of the data set if a linear function can be used to represent the data?

A
The set must have a constant additive rate of change.
B
The set must have a constant multiplicative rate of change.
C
The values in the set must be positive.
D
The values in the set must be increasing.
19

Elena agrees to finish a knitting project for a friend. The graph shows the number of rows Elena completes compared to the amount of time spent knitting.

Question illustration
A
12
B
14
C
15
D
19
20

Question text not available

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D

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