Proportional Tables and Graphs with Equations

Is there a proportional relationship between x and y?

• YES

• NO

The table shows the relationship between the number of miles traveled, y, and the number of gallons of gas used, x.

Which of the following equations best represents the relationship?

• y = 7.6x

• y = 0.013x

• y = 684x

• y = 76x

The graph shows the amount of money that Janice saves each week from her summer job. Which best represents the unit rate?

• (0 , 0)

• (1, 200)

• (200, 1)

• (2, 200)

Jermaine plots the points (0, 0) and (4, 11) on a graph to represent a proportional relationship. Which of the following equations represents the relationship between the x and y-values?

What number is missing in the table?

What is the constant of proportionality?

Which of the following graphs does not represent a proportional relationship?

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• 
• 
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The table represents some points on a linear function. Which situation can be modeled by this function?

• The cost of buying 1 pair of shoes for $84.

• The cost of using 1 gallon of gas for $76.

• The cost of buying 5 pairs of shoes for $76.

• The cost of purchasing 11 pairs of shoes for $228.

Kenny is practicing for at typing test. The number of words he can type is proportional to the number of minutes he types. If Kenny types for 280 words, how many minutes did it take him?

Is this table proportional or non-proportional?

• non-proportional

• proportional