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Independent and Dependent Variables, Proportional Relationships

Total questions: 23

Worksheet time: 2hrs 55mins

Name
Class
Date
1.
On a graph, which axis shows the dependent variable?
a)
x-axis
b)
y-axis
c)
neither
d)
it changes
2.

The x- axis is the ___________________ number line in the coordinate plane.

a)

Vertical

b)

Diagonal

c)

Horizontal

d)

origin

3.

Sarah is bringing treats to her elementary school class on her birthday. The number of treats she brings in is based on the number of students in her class.


t = the number of treats

s = the number of students


Which of the variables is INDEPENDENT?

a)

s

b)

t

4.

Sophie earned $5 for every A she got on her report card.


m = money

A = A on report card


The dependent variable is:

a)

m = money

b)

A = A on report card

5.

Which of the following is the label for the independent variable.

a)

Money Collected

b)

Raising Money

c)

Boxes Sold

d)

None of the above

6.

Which of the following equations match the table.

a)

x = 2y

b)

y = 2x

c)

y = x + 5

d)

x = y

7.
Based on the graph, what speed is the car traveling at?
a)
50 mi/hr
b)
60 mi/hr
c)
120 mi/hr
d)
360 mi/hr
8.

What are the coordinates of point B?

a)

( 4 , -3 )

b)

( 4 , 3 )

c)

( -3 , 4 )

d)

( -3, -4 )

9.

What are the coordinates of point D?

a)

( 4 , 3 )

b)

( -4 , -3 )

c)

( -3 , -4 )

d)

( -3, 4 )

10.
The graph shows the number of words per minute that Paola types. Which statement about the relationship represented in the graph is true?
a)
The number of minutes is the dependent quantity.
b)
The number of words is the dependent quantity.
c)
The number of words is the independent quantity.
11.
The cost of downloading one song from a website is $0.99.
Which equation can be used to find t, the cost in dollars of downloading n songs?
a)
t = 0.99n
b)
t = n + 0.99
c)
n = 0.99t
12.

Which situation best describes the relationship between all the values of x and y in the table?

a)

Rachel had six dollars and then started to save one dollar a week .

b)

Beatriz ran one mile the first week and one mile each week after that .

c)

James read zero books in six months and then started to read one book each week.

d)

Marion has six times the number of toy trains that Tony has.

13.

Which equation best represents the relationship between x and y?

a)

y= x + 25

b)

x= y +25

c)

x= 25y

d)

y=25x

14.
Find the equation for the graph.
a)
y = 6x
b)
y = x + 6
c)
y = (1/6)x
d)
y = x/6
15.
What is the equation y=kx for the table?
a)
y=1/3x
b)
y=3x
c)
y=5x
d)
y=1/5x
16.
Which statement below accurately represents the graph?
a)
$100 is earned for each hour worked
b)
$200 earned for every 2 hours worked
is the unit rate
c)
$500 is earned for every 8 hours worked
d)
$300 is earned after working 4 hours
17.
Write the equation for the table given.
a)
y = 16/2x
b)
y=8x
c)
y=12x
18.

What is the value of y when x = 7 in the equation y = 3x ?

a)

21

b)

7

c)

10

d)

4

19.
This is a table with a proportional relationship between A and B.  Find the missing value of B. 
a)
33
b)
44
c)
32
d)
48
20.
Write an equation for this relationship.
a)
y=1/5x
b)
y=1/2x
c)
y=2x
d)
y=5x
21.
What is the unit rate in this proportional relationship?
a)
60 miles/1 hour
b)
120 miles/ 2 hours
c)
1 mile/ 1 hour
22.
Which one is correctly written ratio sentence for the constant in the equation: W = 2c. 
a)
For every 2 watermelons, there is 1 child.
b)
W = watermelon and c=children
c)
For every 2 children, there is 1 watermelon. 
d)
Every child gets a watermelon.
23.

What is the value of x when y = 8 in the equation y = 4x ?

a)

32

b)

48

c)

2

d)

12