Direct Variation

Pat needs 14 sticks of pepperoni to make 28 pizzas. How many sticks of pepperoni are needed to make 36 pizzas?

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y varies directly with x. When y = 39,  x = 3.  Find the value of y when x = 2.

• 26
• 3
• 58.5
• 2

The number of pages that Hayden can read varies directly with the time spent reading.

If he reads 12 pages in 4 minutes, how many pages can he read in 17 minutes?

• 60 pages

• 51 pages

• 47 pages

• 75 pages

If y vaires directly with x and y= 12 when x= 15. What is the value of x when y= 16?

• 12.8
• 20
• 11.25
• 19

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26
• 3
• 58.5
• 2

A dishwasher uses 65 gallons of water to wash 5 loads of dishes. How many gallons of water would be used to wash 12 loads? 

• 60 gallons
• 780 gallons
• 156 gallons
• 12/13 gallons

The price of lemons varies directly with the number of pounds of lemons. If it cost $6.20 for 5 pounds of lemons, how much does it cost for 3 pounds of lemons?

• $3.72

• $1.24

• $1.84

• $3.00

12 ounce shampoo bottle lasts Mike 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?

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The amount of money earned on a job is directly proportional to the number of hours worked.  If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2
• $308
• $1.57
• $265

A tutoring job pays $222 for ten hours of work.  If a tutor were to work for a total of thirty-five hours that week, how much will they make?

• $1.58
• $777
• $2
• $685