Different Representation of Proportional Relationships

Which representation best describes a proportional relationship?

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8.5.F

Which graph appears to show a proportional relationship between x and y?

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Which could NOT represent a proportional relationship?

• The number of gallons of water in x barrels with 42 gallons of water in each barrel.

• The amount an employee who makes $8.50 per hour earns in h hours.

• The weight in x weeks of a puppy that gains two pounds per week if its starting weight is x pounds.

• The purchasing of p pounds of bananas for $0.55 per pound.

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8.5.H

Which situation represents a proportional relationship?

• The cost of purchasing a basket of oranges for $1.30 per pound plus $5.00 for the basket.

• The cost of purchasing peaches for $7.00 per box with a delivery charge of $3.00.

• The cost of purchasing grapefruit for $1.80 per pound with a coupon with $1.00 off the total cost.

• The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound.

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8.5.H

Lucy spends $1.75 on a cup of coffee each day. Fill in the following table to represent a proportional relationship.

b

d

e

a

$8.75

$12.25

$1.75

$3.50

$10.50

$5.25

$3.00

$7.00

Answer the following questions.

c

d

g

i

f

y=4500x

100

10,500

10

4500

1,500

y = 1500x

yes

y=10x

no

The ratio of black keys to white keys on a piano is 5 to 7.  Complete the table to create additional equivalent ratios.​

d

c

e

f

21

63

84

28

35

55

The ratio of black keys to white keys on a piano is 5 to 7.  Complete the table to create additional equivalent ratios.

d

c

e

f

35

21

55

63

84

28

A dolphin travels through the water of a speed of 25 kilometers per hour. Which representation shows the distance a dolphin can travel at this rate? (7.4A)

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CCSS.Math.Content.7.RP.A.3

CCSS.Math.Content.7.RP.A.1

A family makes homemade pickles. They pick the pickles at a rate of 80 pickles per 5 jars. Which answer choices best represent packing y pickles in x jars at that rate? Select TWO correct answers.