Quiz about Proportional Relationships Study Guide

Question 1

Is this graph a proportional relationship?

Accepted Answer

No, it is not proportional.

Answer

Yes, it is proportional.

Answer

Maybe, it depends on the numbers.

Answer

Not enough information.

Question 2

Is the following a proportional relationship?

Accepted Answer

Yes, it is proportional.

Answer

Maybe, it depends on the numbers.

Answer

No table is proportional.

Answer

No, it is not proportional.

Question 3

Is the equation a proportional relationship?

Accepted Answer

No, it is not proportional.

Answer

Yes, it is proportional.

Answer

Maybe, it depends what come next.

Answer

No equations are proportional.

Question 4

What is the constant of proportionality of y = 8x?

Accepted Answer

8

Answer

y

Answer

x

Answer

=

Question 5

What is the constant of proportionality?

Accepted Answer

95

Answer

190

Answer

1/85

Answer

2

Question 6

What is the constant of proportionality in this graph?

Accepted Answer

40

Answer

160

Answer

80

Answer

2

Question 7

A restaurant has an all you can eat buffet for $13.95 per person. What is the constant of proportionality?

Accepted Answer

13.95

Answer

x/y

Answer

100

Answer

Not enough information

Question 8

What is the constant of proportionality? Write your answer as a decimal.

Accepted Answer

3.5

Answer

10.5

Answer

17.5

Answer

0.2857...

Question 9

Which equation represents the proportional relationship in this table?

Accepted Answer

y = 3.5x

Answer

y = 4.5x

Answer

y = 10.5x

Answer

y = 0.29x

Question 10

If the rainfall continues at this rate, how many inches of rain will fall after 6 hours?

Accepted Answer

21 inches

Answer

24 inches

Answer

20.5 inches

Answer

6 inches

Question 11

An app developer projects that he will earn $20.00 for every 8 apps downloaded. Write an equation to represent the proportional relationship between the total earnings, y, and the number of apps downloaded, x.

Accepted Answer

y = 2.5x

Answer

y = 0.4x

Answer

y = 20x

Answer

y = 8x

Question 12

As the x-value increases by 3, the y-value increases by 12. Find the rate of change. (Remember: Rate of change is the SAME as constant of proportionality.)

Accepted Answer

4

Answer

3

Answer

1/4

Answer

12

Question 13

As the x-value increases by 3, the y-value increases by 12. Write an equation to represent the relationship between the x and y-values.

Accepted Answer

y = 4x

Answer

y = 3x

Answer

y = 12x

Answer

y = 1/4x

Question 14

The table shows the relationship between the total sales, y, and the number of textbooks sold, x. What is the rate of change?

Accepted Answer

$16 per textbook

Answer

$4 per textbook

Answer

$0.06 per textbook

Answer

$64.00 per textbook

Question 15

The table shows the relationship between the total sales, y, and the number of textbooks sold, x. Write an equation to represent the relationship.

Accepted Answer

y = 16x

Answer

y = 0.06x

Answer

y = 64x

Answer

y = 4x

Question 16

What is the rate of change? (Remember: Rate of change is the SAME as the constant of proportionality.)

Accepted Answer

$25 per lawn

Answer

$50 per lawn

Answer

$100 per lawn

Answer

$3 per lawn

Question 17

Write an equation to represent the relationship in the form y = kx.

Accepted Answer

y = 25x

Answer

y = 100x

Answer

y = 50x

Answer

y = 3x

Question 18

Margie saves $15 of her allowance every two weeks. Which of the following represent the relationship between the total amount saved, y, and the number of weeks, x?

Accepted Answer

A and B only

Answer

A only

Answer

A, B and C

Answer

C only

Question 19

Lacey drives 125 miles and uses 5 gallons of gasoline. Write an equation represent the proportional relationship between the number of miles driven, y, and the amount of gasoline used, x.

Accepted Answer

y = 25x

Answer

y = 5x

Answer

y = 125x

Answer

y = 0.04x

Question 20

Lacey drives 125 miles and uses 5 gallons of gasoline. Write an equation represent the proportional relationship between the number of miles driven, y, and the amount of gasoline used, x.

How many gallons are necessary to travel 350 miles?

Accepted Answer

14 gallons

Answer

25 gallons

Answer

2.8 gallons

Answer

70 gallons

Question 21

Sweet Stuff is a baking company that bakes specialty cakes. Sweet Stuff can bake 6 cakes in 2 hours. Write an equation to represent y, the number of cakes that can be baked in x hours.

Accepted Answer

y = 3x

Answer

y = 6x

Answer

y = 2x

Answer

y = 1/3x

Question 22

Sweet Stuff is a baking company that bakes specialty cakes. Sweet Stuff can bake 6 cakes in 2 hours. Use the graph to represent y, the number of cakes that can be baked in x hours.

In this situation, what does the ordered pair (4, 12) represent?

Accepted Answer

Sweet Stuff bakes 12 cakes in 4 hours.

Answer

Sweet Stuff bakes 6 cakes in 12 hours.

Answer

The unit rate for this situation is 4/12.

Answer

Sweet Stuff bakes 4 cakes in 12 hours.

Proportional Relationships Study Guide

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