M5X Module 12-Application of Proportion

Which of the following illustrates direct proportion?

• As x decreases, y increases

• As x increases, y increases

• As y increases, x remains the same

• As y decreases, x remains constant

Which of the following illustrates inverse proportion?

• As y decreases, x decreases

• As x increases, y increases

• As x increases, y decreases

• As y decreases, x remains constant

Which of the following relationships describes direct variation?  

• The number of workers working and the time to finish a job

• The number of hours it takes to reach home and speed of travel

• The pay a worker receives and the number of hours he works

• The distance traveled by a car and the amount of fuel left in that car

Which of the following relationships describes inverse variation?  

• The number of workers working and the time to finish a job

• The number of hours a car travels and the distance traveled

• The pay a worker receives and the number of hours he works

• The distance of two cities in a map and their actual distance

If y is directly proportional to x and y = 18 when x =3, what is the constant of proportionality?  

• 54

• 21

• 15

• 6

If p is inversely proportional to q and q = 36 when p =9, what is the constant of proportionality?  

• 324

• 45

• 27

• 4

 In the proportion 5: 4 = 10: 16, the means are ____________.

• 4 & 10

• 5 & 4

• 10 & 16

• 5 & 16

In the proportion 6: 11 = 18: 33, the extremes are ____________.   

• 6 & 11

• 18 & 33

• 11 & 18

• 6 & 33

In the proportion 5 : a = 15 : 90, the product of the means is __________.

• 5a       

• 15a

• 45

• 1,350

In the proportion x : 7 = 54 : 42, the product of the extremes is __________.

• 7x

• 42x

• 378

• 2,268