Proportional Relationships

First and Last name

Does the following set of points form a proportional relationship? Explain your answer.

{(0, 1), (1, 3), (2, 5), (3, 7)

• Yes, because the line passes through the origin.

• No, because the line does not pass through the origin.

• Yes, because the points form a straight line.

• No, because the points do not form a straight line.

Select ALL tables that represent a proportional relationship between x and y.

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The table show a proportional relationship between x and y. What is the constant of proportionality?

• 1

• 2

• 3

• 4

Calli has a 110 gallon pool in her back yard she needs to fill with some water. If water costs $0.25 per gallon, which equation represents the cost of her filling the pool? Let F stand for the cost of filling the pool and G stand for the number of gallons she puts into the pool.

• F=0.25G

• G=0.25F

• F=100G

• G=110F

Mr. Mancini is driving east to visit some relatives. The graph shows the distances and times he drove. Which value is closest to the unit rate represented in the graph?

• 240 mph

• 180 mph

• 120 mph

• 60 mph

The graph represents the amount of money Sara earns based on the number of hours she works. What can be concluded from the information on the graph?

• Sara earned $50

• Sara earns $10 per hour.

• Sara earns $45 in 2 hours.

• Sara worked 5 hours.

The graph represents the number of color copies made and the amount of money required. The total numbers of copies that can be made with $25 is (A). The point (6, 15) represents that (B) ____ copies will cost (C) $____.

• (A) 15; (B) 6; (C) 10

• (A) 10; (B) 15; (C) 6

• (A) 6; (B) 15; (C) 10

• (A) 10; (B) 6; (C) 15

The printer prints pages at a constant rate. The graph show the relationship between the umber of pages printed, p, and the time, t, in minutes. What is the constant of proportionality?

• 0.25

• 10

• 4

• 40

Which 2 equations represent the relationship between the number of pages and the time?

• t = 0.25p

• p = 0.25t

• p = 4t

• t = 4p