Fast Proportional Relationships

Which of the following tables represents a proportional relationship?

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Which of the following tables represents a proportional relationship?

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Does the table represent a proportional relationship?

• No, because the table has negative numbers.

• No, because the ratios of y to x are not equal.

• Yes, because all the ratios of y to x are equal to -2.

• Yes, because all the ratios of y to x are equal to -4.

A deli charges the same price, $5.10, for all of its different sandwiches. If a company ordered n sandwiches for a luncheon, which equation could be used to find the total price, P, that the deli charged for the sandwiches?

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At the beginning of each school year, Madison Middle School orders new shirts for the entire student body. Each student receives one shirt. Each shirt is the same price, s, and the school orders enough for n students. Which equation represents the proportional relationship between P, the total price of the shirts, and the number of students?

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Sandra sets the cruise control in her car to 71 miles per hour when she goes on road trips. Which equation can be used to find how many hours, h, it will take her to drive m miles at her constant speed?

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The total amount of money, M, that Bob earns each week at his job is proportional to the wages, w, that he earns per hour for working h hours. Which equation represents the relationship between the total amount Bob earns and hours worked?

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A singing competition is auditioning 41 contestants each hour for the next h hours. Which equation can be used to find the total number of contestants, C, that audition in h hours?

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A class is going on a field trip to see a movie. Each ticket is $7.00. The number of students, n, who will receive a $7.00 ticket is proportional to the total cost, C, of all the tickets. Which equation could be used to find the total cost of all the tickets?

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Which equation could be used to find the number of days, d, in h hours?

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