STAAR Prep-8 Proportionality

The table shown below was posted on the wall at Andy’s Hardware to show the price of varying lengths of chain-link fencing.

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This represents a proportional relationship?

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The price of the same fencing at Bargain Hardware can be determined by the equation y = 2.5x where y is the price, in dollars, for x feet of fencing. Who has the cheaper unit price per foot, Bargain Hardware or Andy’s Hardware?

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If both store’s pricing were graphed on the same coordinate grid, which store’s graph would be steeper?

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The Perry family joined a babysitting service. The service charges an initial flat fee for their one-time membership charge and an additional $12 per hour for each job. Which graph could represent the relationship between the hours of babysitting and total amount paid for the Perry family?

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The graph below shows the relationship between the number of brownie recipes and the number of cups of flour required.

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Which equation has a constant of proportionality equal to 4?

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Chad built a scale model of a statue. He built the model 7 inches tall to represent the actual height of 15 feet. Which equation below represents the relationship between the actual height (a), in feet, and the height of the model (m), in inches?

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At a restaurant 600 customers were served during a 10-hour period of time. Which graph has a slope that best represents the number of customers that were served per hour at this restaurant?

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The cost of 6 pencils at a store is 30 cents. Each pencil has the same cost. Which graph has a slope that best represents the cost of each pencil at this store?

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A survey of customers at a restaurant revealed that 7 out of 10 customers preferred the restaurant’s new spaghetti sauce. Which graph shows the relationship between y, the number of customers who preferred the new spaghetti sauce, and x, the total number of customers?

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Which table represents a non-proportional relationship between x and y?

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A teacher bought markers at a cost of $3 per set. The teacher had a $2-off coupon to use toward the total cost of the markers bought.
Which table shows the relationship between x, the number of sets of markers bought by the teacher, and y, the total cost of the markers?

This represents a proportional relationship?

The price of the same fencing at Bargain Hardware can be determined by the equation y = 2.5x where y is the price, in dollars, for x feet of fencing. Who has the cheaper unit price per foot, Bargain Hardware or Andy’s Hardware?

If both store’s pricing were graphed on the same coordinate grid, which store’s graph would be steeper?

The Perry family joined a babysitting service. The service charges an initial flat fee for their one-time membership charge and an additional $12 per hour for each job. Which graph could represent the relationship between the hours of babysitting and total amount paid for the Perry family?

The graph below shows the relationship between the number of brownie recipes and the number of cups of flour required.

Which equation has a constant of proportionality equal to 4?

Chad built a scale model of a statue. He built the model 7 inches tall to represent the actual height of 15 feet. Which equation below represents the relationship between the actual height (a), in feet, and the height of the model (m), in inches?

At a restaurant 600 customers were served during a 10-hour period of time. Which graph has a slope that best represents the number of customers that were served per hour at this restaurant?

The cost of 6 pencils at a store is 30 cents. Each pencil has the same cost. Which graph has a slope that best represents the cost of each pencil at this store?

A survey of customers at a restaurant revealed that 7 out of 10 customers preferred the restaurant’s new spaghetti sauce. Which graph shows the relationship between y, the number of customers who preferred the new spaghetti sauce, and x, the total number of customers?

Which table represents a non-proportional relationship between x and y?

A teacher bought markers at a cost of $3 per set. The teacher had a $2-off coupon to use toward the total cost of the markers bought. Which table shows the relationship between x, the number of sets of markers bought by the teacher, and y, the total cost of the markers?

A teacher bought markers at a cost of $3 per set. The teacher had a $2-off coupon to use toward the total cost of the markers bought.
Which table shows the relationship between x, the number of sets of markers bought by the teacher, and y, the total cost of the markers?