Proportional/Non-Proportional and Functions #1

Circle each equation that describes a proportional relationship.

• y = 4x + 10

Which of the following represents a proportional relationship?

• Larry's salary is determined by an hourly wage of $12.50 plus $100 each month for gas.

• The total amount for ordering peanuts online is $5.85 per pound plus $5 shipping charge.

• Mike orders 15 soccer balls at $20 each plus $15 for shipping and handling.

• The total cost of an order placed through Sports Central is $17 per ball.

Which of the following does NOT describe a proportional relationship?

• Mike makes 10 pizzas every hour.

• The girl scouts sell a box of cookies for $3.25 per box.

• Mr. Hoffman needed some plants for his yard. Lowes charges $4.50 per plant plus a $10 delivery charge.

• The total cost for uniforms for the football team is $15.85 per uniform.

A recipe for brownies calls for 2 cups of sugar and 6 cups of flour. Josh decides to increase the recipe by using 18 cups of flour. What is the number of cups of sugar he should use?

• 6 cups

• 4 cups

• 8 cups

• 10 cups

Which of the following tables represents a non-proportional relationship?

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Which set of ordered pairs represent y as a function of x?

• (1, 2), (3, 5), (7, 8), (1, 10)

• (0, 1), (3, 5), (6, 6), (6, 10)

• (2, 2), (3, 4), (6, 8), (1, 10)

• (3, 2), (4, 5), (4, 8), (4, 10)

Which table does NOT describe a function?

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Which set of coordinates describe a function?

• {(2, 4), (-2, 7), (6, 2), (-2, 8)}

• {(7, 2), (3, 9), (3, 10), (-1, 7)}

• {(7, -4), (3, -3), (2, -2), (7, -8)}

• {(6, 3), (-6, 4), (4, 0), (1, 2)}

Which mapping does NOT represent a function?

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Which graphs shows y as a function of x?

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