Read Proportional Graphs

Mickey is traveling at a constant speed on his bicycle. The graph shows how d, the total distance traveled, depends on t, the time in hours.

What can be concluded from the information on the graph?

• Mickey is riding at a speed of 11 miles per hour.

• Mickey rode a total of 12 miles.

• Mickey rode a total of 11 miles.

• Mickey is riding at a speed of 12 miles per hour.

Which graph shows a proportional relationship between x and y?

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Which equation represents the relationship between x, the time in years, and y, the length in centimeters?

• y = 4.5x

• x = 4.5y

• x = 9y

• y = 9x

The table shows a proportional relationship between x and y. Which equation describes this relationship?

The graph shows how the depth of a submarine increased as it dove beneath the ocean surface. What can be concluded from the information on the graph?

• The submarine's depth increased at a rate of 1/3 meter per second.

• The submarine's depth increased from 1 meter to 3 meters in 1 second.

• The submarine's depth increased at a rate of 3 meters per second.

• The submarine's depth increased from 1 meter to 3 meters in 3 seconds.

The graph shows how the amount of time it takes DeeDee to read a book depends on the number of pages the book has. Which expression gives DeeDee's average reading speed in minutes per page?

Each time he read his book, Paul recorded the number of minutes he spent reading and the number of pages he read in that time. He graphed this information, and decided that the number of pages and time are related proportionally. Which graph is most likely the graph of his information?

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Which graph shows a proportional relationship between x and y?

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The table shows a relationship between

x and y.

What is the constant of proportionality?

• 8

• 24

• 4

• 3

In the graph, the amount of sales tax (t) is proportional to the price (p) of an item.

Which equation represents this relationship?

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