1. Which of the following illustrates a direct variation? A. y=2x B. y=2/x C. x=2/y D. xy=2
2. The cost C varies directly as the number n of books is written as ___.
A. Cn=k B. C=kn C. n=Ck D. C=k/n
3. What is the value of k, if y varies directly as x and y=21 when x=3?
A. 1/9 B. 1/7 C. 7 D. 9
4. Which of the following represents a direct variation?
A. C.
B. D.
5. How would you translate the phrase “y varies inversely as x” into mathematical equation?
A. x/y=k B. y=x/k C. y=kx D. y=k/x
6. Which of the following describes an inverse variation?
A. C.
B. D.
7. If R varies directly as S and inversely as T, which of the following equations describes the
relation among the three variables R, S, and T?
A. R = k/ST B. R = kT/V C. R = kS/T D. R = KST
8. John uses 8 liters of gasoline to travel 100 kilometers, how many liters of gasoline will he use
on a trip of 450 kilometers?
A. 16 B. 20 C. 36 D. 45
9. The number of days needed in renovating a house varies inversely as the number of men
working. It takes 6 days for 8 men to renovate the house. How many men are needed to
complete the job in 4days?
A. 12 B. 9 C. 6 D. 3
10.The mass of a rectangular sheet of wood varies jointly as the length and the width. When the
length is 30 cm and the width is 20 cm, the mass is 600 grams. Find the mass when the length
is 20 cm and the width is 10 cm.
A. 100 grams B. 200 grams C. 300 grams D. 400 grams
sorry but ayaw makita nung iba eh
2. The cost C varies directly as the number n of books is written as ___.
A. Cn=k B. C=kn C. n=Ck D. C=k/n
3. What is the value of k, if y varies directly as x and y=21 when x=3?
A. 1/9 B. 1/7 C. 7 D. 9
4. Which of the following represents a direct variation?
A. C.
B. D.
5. How would you translate the phrase “y varies inversely as x” into mathematical equation?
A. x/y=k B. y=x/k C. y=kx D. y=k/x
6. Which of the following describes an inverse variation?
A. C.
B. D.
7. If R varies directly as S and inversely as T, which of the following equations describes the
relation among the three variables R, S, and T?
A. R = k/ST B. R = kT/V C. R = kS/T D. R = KST
8. John uses 8 liters of gasoline to travel 100 kilometers, how many liters of gasoline will he use
on a trip of 450 kilometers?
A. 16 B. 20 C. 36 D. 45
9. The number of days needed in renovating a house varies inversely as the number of men
working. It takes 6 days for 8 men to renovate the house. How many men are needed to
complete the job in 4days?
A. 12 B. 9 C. 6 D. 3
10.The mass of a rectangular sheet of wood varies jointly as the length and the width. When the
length is 30 cm and the width is 20 cm, the mass is 600 grams. Find the mass when the length
is 20 cm and the width is 10 cm.
A. 100 grams B. 200 grams C. 300 grams D. 400 grams
sorry but ayaw makita nung iba eh
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