Proportional vs Non-Proportional 8.5H

Which situation could NOT represent a proportional relationship?

• The number of gallons of water in x barrels with 42 gallons of water in each barrel

• The amount an employee who makes $8.50 per hour earns in h hours

• The weight in x weeks of a puppy that gains 2 pounds per week if its starting weight is 8 pounds

• The cost of purchasing p pounds of bananas for $0.55 per pounds

Which situation represents a proportional relationship?

• The cost of purchasing a basket of oranges for $1.30 per pound plus $5.00 for the basket

• The cost of purchasing peaches for $7.00 per box of peaches with a delivery charge of $3.00

• The cost of purchasing grapefruit for $1.80 per pound with a coupon for $1.00 off the total cost

• The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound

Classify the relatioship as proportional or non-proportional.

• proportional

• non-proportional

Classify the relatioship as proportional or non-proportional.

• proportional

• non-proportional

Classify the relatioship as proportional or non-proportional.

 $y=-\frac{2}{3}x$  

• proportional

• non-proportional

Classify the relatioship as proportional or non-proportional.

 $y=2x-3$  

• proportional

• non-proportional

Classify the relatioship as proportional or non-proportional.

• proportional

• non-proportional

Which of the following is true?

• line m shows a proportional relationship because the y-intercept is not zero

• line m shows a non-proportional relationship because the equation of the line can be represented by y=mx+b, where b does not equal zero

• line n shows a proportional relationship because the slope is negative

• line n shows a non-proportional relationship because the equation of the line can be represented by y=kx

Which of the following describes a situation that is non-proportional?

• each light bulb costs $0.10 per hour in electricity cost when turned on

• each light bulb at a wholeslae purchase club costs $3.79 plus the membership fee of $4.95

• each light bulb in a house contains 25 milligrams of tungsten

• each light bulb in a light fixture uses 40 watts of electricity per hour

Mahn collects stamps. He currently has 7 stamps and plans to collect 3 more each year. Which statement best describes Mahn's situation?

• Mahn's situation is proportional because he will be collecting stamps at a constant rate

• Mahn's situation is proportional because he has already collected 7 stamps and plans to collect 3 more each year

• Mahn's situation is non-proportional because he has already collected 7 stamps and plans to collect 3 more each year

• Mahn's situation is non-porportional becasue he will be collecting stamps at a constant rate