Direct Proportion Applications

Two slices of Dan’s Famous Pizza have 230
Calories. How many Calories would you expect to be in 5 slices of the same pizza?

• 575 calories

• 250 calories

• 460 calories

• 2.5 calories

What is the constant of proportionality?

• 8

• 2

• 3

Tags

CCSS.7.RP.A.2B

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

Tags

CCSS.6.RP.A.3C

Solve the proportion:

• c=4

• c=8

• c=14

• c=10

Tags

CCSS.7.RP.A.2B

Which of the following function represents a direct proportion?

• y=1/x

• y=2k/x

• y=kx

• y=0x

Y is directly proportional to X, when Y=8, X=4. Find the equation relating Y and X.

• Y=X

• Y=kX

• Y=2X

• Y=0.5X

Name the constant of proportionality.

• 8

• 16

• 6

• 3

Tags

CCSS.7.RP.A.2B

Fill in the missing number into the ratio table

• 5

• 15

• 25

• 12

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/3

• Yes; 3

• Yes; 5

• No