Proportional Relationships Unit Rate

Dan painted 3/4 of a wall using 1/4 of a can of paint. Which statements are true. Select all that apply

• He can paint 2 walls with 1/2 can of paint.

• He can paint 3 walls with 1 can of paint.

• He can paint 5 walls with 1 2/3 cans of paint.

• He can paint 8 walls with 2 cans of paint.

Richard mows 1/3 of his yard in 1/2 hour. At the same rate, how much of his yard would Richard mow in 1 hour?

• 1/6

• 2/5

• 2/3

• 3/2

Lien jogged 2/3 of a mile in 1/12 of an hour. What was her speed in miles per hour?

• 1/18 mph

• 1/5 mph

• 4 mph

• 8 mph

Which table shows a proportional relationship between x and y?

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Four students in Mrs. Henderson's class each attempted to graph a proportional relationship between x and y.

Which graph shows a proportional relationship?

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Four students in Mrs. Henderson's class each attempted to graph a proportional relationship between x and y.

How should Mrs. Henderson describe to her students the graph of a proportional relationship?

• a straight line through the origin

• a straight line not through the origin

• not a straight line but through the origin

• not a straight line and not through the origin

Four local stores sell the same brand of cheddar cheese. The table below shows how much each store charges.

Which store has the lowest price per pound of the cheese?

• Store A

• Store B

• Store C

• Store D

Four local stores sell the same brand of cheddar cheese. The table below shows how much each store charges.

Which store has the highest price per pound for the cheese?

• Store A

• Store B

• Store C

• Store D

A proportional relationship is represented by the equation 2x = 18y. If y = kx where k is the constant of proportionality, what is the value of k?

• 9

• 2

• 1/2

• 1/9

A painter mixes 6 parts of red paint and 8 parts of yellow paint to make dark orange paint. Which equation can the painter use to calculate the amount of red paint, R, that is needed to mix with a given amount of yellow paint, Y?

• R = 6/8 + Y

• R = 6/8 - Y

• R = 3/4Y

• R = 4/3Y