Questions

1) Bertha's chocolate factory is expanding. She wanted to know how many workers she needs to produce chocolate bars. The following table lists a certain number of workers and the corresponding amounts of chocolate bars they produce.

True or False: The relationship between the number of workers and the number of bars produced is proportional.

True

False

Correct!

2) Consider the pairs of ratios given and determine whether or not the ratios form a proportion.

8 old rings for every 1 ring 16 old rings for every 2 rings

A) Yes

B) No

Correct!

3) The two graphs below show the total time spent on the phone by the people of Ohio over a span of 9 weeks Study the graphs and select all of the correct scenarios.

A) Graph 1: Total time spent is not proportional to the number of weeks.
B) Graph 2: Total time spent is proportional to the number of weeks.
C) Graph 1: Total time spent is proportional to the number of weeks.
D) Graph 2: Total time spent is not proportional to the number of weeks.

Correct!

A is right but C is not the 2nd answer

4) Which of the following tables shows a proportional relationship between x and y?

A)

B)

C)

D)

Correct!

5) Is y directly proportional to x based on the data in the table?

A) Yes

B) No

Incorrect

6) The table shows a proportional relationship between the number of pounds of grapes purchased and the total cost of the grapes.

A row of values is missing in the table. Which number of pounds of grapes and total cost of the grapes could be used as the missing values in the table?

Select all of the correct responses.

A) Pounds of grapes: 2 Total cost $1.38
B) Pounds of grapes 3: Total cost: $2.53
C) Pounds of grapes: 8 Total cost: $5.52
D) Pounds of grapes: 11 Total cost: $8.97
E) Pounds of grapes: 6 Total cost: $3.68

Incorrect

There are 2 total answers - D is not one of them

7) Gary has a box of pencils. In the box, 7/21 of the pencils have been sharpened. Select the three fractions that are proportional to the fraction of sharpened pencils in Gary’s box.

A) 1/3
B) 1/7
C) 12/4
D) 13/39
E) 14/42
F) 21/7

Incorrect

There are 3 total answers - the two you chose are both wrong

8) Does the graph below show a proportional relationship?

A) Yes

B) No

Incorrect

9) Which graph displays a proportional relationship?

A)

B)

C)

D)

Incorrect

10) If two quantities vary directly, which must be true of a graph showing the proportional relationship between them? Select all that apply.

A) The graph is a curve.
B) The points on the graph are connected.
C) The graph increases from left to right.
D) The points of the graph form a straight line.
E) The points of the graph must include the origin.
F) The points must all form equivalent ratios.

Incorrect

F is right - plus two more - B is not one of those

11) A proportional relationship is shown. What is the constant of proportionality?

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12) What is the constant of proportionality for the graph below?

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13) What size package of pasta has the lowest constant of proportionality?

A) 6 oz

B) 8 oz

C) 10 oz

D) 32 oz

Incorrect

14) What is the constant of proportionality if there are 92 miles driven using 4 gallons of gas?

A) 21

B) 22

C) 23

D) 96

Correct!

15) The table represents a proportional relationship. A student states the constant of proportionality is 2.5 because 12.5 – 10 = 2.5.

Part A: Is the student correct?

A) Yes. To find the constant of proportionality, you subtract the x-values from the corresponding y-values.

B) No. He should have multiplied the x-values by the corresponding y-values.

C) No. He should have divided the x-values by the corresponding y-values.

D) No. He should have divided the y-values by the corresponding x-values.

Correct!

16) Part B: What is the constant of proportionality?

A) 0.8

B) 1.25

C) 1.2

D) 1.5

Correct!

17) The graph below shows cost, in dollars, is proportional to the number of tickets. Identify and interpret the constant of proportionality.

A) 9 dollars for 9 tickets

B) 5 dollars for 65 tickets

C) 13 dollars for 1 ticket

Incorrect

18) Part A: Which line on the graph is proportional?

A) You

B) Friend

C) Neither

D) Both

Correct!

19) Part B: What are your earnings per hour?

A) $3 per hour

B) $45 per hour

C) $15 per hour

D) $7 per hour

Incorrect

20) Part C: What are your friend’s earnings per hour?

A) $4 per hour

B) $40 per hour

C) $8 per hour

D) $10 per hour

Incorrect

21) During their last workout, Michelle did 81 crunches in 3 minutes and her friend Zack did 104 crunches in 4 minutes. Each person thought they did more crunches per minute. Based on this workout, which person is correct?

A) Both are correct.

B) Zack is correct.

C) Neither are correct.

D) Michelle is correct.

Incorrect

22) The table below represents a relationship between the time a turtle walks and the distance the turtle travels. What is the constant of proportionality in feet per minute, represented in this table?

A) 5

B) 20

C) 30

D) 24

Incorrect

23) Proportions and Constant of Proportionality
Click on the Unit Resource icon to complete an Offline Activity. Be sure to add to log entry and attach your document.

DATE	START TIME	END TIME	DESCRIPTION
11/23/2021	10:00 AM	01:00 PM	read more about proportions https://www.mathsisfun.com/algebra/proportions.html https://www.merriam-webster.com/dictionary/proportion

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