Directly Proportional

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work. 

• $3813

• $620

• $190.65

• $4.96

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours? 

• $394

• $440

• $472.80

• $512.20

Tags

CCSS.7.EE.B.3

x varies directly with y. If x = 30 when y = 15, what is y when x = 25?

• y = 50

• y = 13

• y = 12.5

• y = 18

The number of kilograms of water in a person’s body varies directly as the person’s mass.  A person with a mass of 90 kg contains 60 kg of water.  How many kilograms of water are in a person whose mass is 75 kg?

• 50 kg water

• 72 kg water

• 94 kg water

• 150 kg water

The income obtained by recycling aluminium cans, varies directly with the number of cans collected. If the price is 40 cents per pound (23 cans):

•How Much will you receive for 100 cans?

• A) $57.5

• B) $185.7

• C) $173.9

• D) $62.5

Tags

CCSS.7.RP.A.3

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

The data in the table is directly proportional. What is the constant of proportionality?

• $3/hour

• 4 hours per dollar

• 1/9 dollar per hour

• $9/hour

Tags

CCSS.7.RP.A.2B

Find the constant of proportionality for this table of values.

• k=3

• k=1

• k=0

• k=4

Tags

CCSS.7.RP.A.2B

What is the constant of proportionality for the data in the table?

• 45 miles per hour

• 90 hours for a mile

• 0.222 distance per time

• 45 hours per mile

Tags

CCSS.7.RP.A.2B