1. The equation A = bh expresses A. a combined variation C. an inverse variation B. a direct variation D. a joint variation 2. What type of variation is illustrated on the situation, "A family husband is working. ore people works in family, more income for the family". A. Direct Variation C. Inverse Variation B. Joint Variation D. Combined Variation 3. The cost c varies directly as the number n of pencils is written as k A. c = kn B.k cn C. n = k D.c =

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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(VARIATIONS)
A) MULTIPLE CHOCE: Find out how much you have learned about variations. Read and
analyse the following problems. Write the letter of your choice on the space provided.
USE THIS PAPER AS YOUR ANSWER SHEET.
1. The equation A = bh expresses
C. an inverse variation
D. a joint variation
2. What type of variation is illustrated on the situation, "A family husband is working,
A. a combined variation
B. a direct variation
so if more people works in family, more income for the family".
A. Direct Variation
C. Inverse Variation
B. Joint Variation
D. Combined Variation
3. The cost c varies directly as the number n of pencils is written as
k
D.c =
A. c = kn
B. k = cn
C. n =
4. Which of the following illustrates a direct variation?
A. xy = 20
B. y = 7x
C. y 3/x
D. 3/y x
5. Which of the following illustrates a joint variation?
A. y = kx
B. a = k/b
C. a =kbc
D. y b/k
6. y varies directly as x and y = 32 when x=4. Find the constant of variation.
А. 8
В. 36
С. 28
D. 128
7. If the statement is x varies directly as y and the constant of variation is 10.
What is the equation of the variation?
10
D. y=
10
А. у %3D 10х
B. x = 10y
C. x =-
y
8. y varies directly as x, if y= 12 when x 4, y is
В. 24
when x is 12.
А. 12
С. 36
D. 48
9. If y varies inversely as x, and y = 50 when x= 10, y is
В. 20
when x= 20
С. 25
D. 30
А. 15
10. If v varies jointly as x and z and y= 36 when x= 2 and z= 3, y is
when x = 4 and
z= 6?
В. 132
С. 144
D. 156
A. 120
Transcribed Image Text:(VARIATIONS) A) MULTIPLE CHOCE: Find out how much you have learned about variations. Read and analyse the following problems. Write the letter of your choice on the space provided. USE THIS PAPER AS YOUR ANSWER SHEET. 1. The equation A = bh expresses C. an inverse variation D. a joint variation 2. What type of variation is illustrated on the situation, "A family husband is working, A. a combined variation B. a direct variation so if more people works in family, more income for the family". A. Direct Variation C. Inverse Variation B. Joint Variation D. Combined Variation 3. The cost c varies directly as the number n of pencils is written as k D.c = A. c = kn B. k = cn C. n = 4. Which of the following illustrates a direct variation? A. xy = 20 B. y = 7x C. y 3/x D. 3/y x 5. Which of the following illustrates a joint variation? A. y = kx B. a = k/b C. a =kbc D. y b/k 6. y varies directly as x and y = 32 when x=4. Find the constant of variation. А. 8 В. 36 С. 28 D. 128 7. If the statement is x varies directly as y and the constant of variation is 10. What is the equation of the variation? 10 D. y= 10 А. у %3D 10х B. x = 10y C. x =- y 8. y varies directly as x, if y= 12 when x 4, y is В. 24 when x is 12. А. 12 С. 36 D. 48 9. If y varies inversely as x, and y = 50 when x= 10, y is В. 20 when x= 20 С. 25 D. 30 А. 15 10. If v varies jointly as x and z and y= 36 when x= 2 and z= 3, y is when x = 4 and z= 6? В. 132 С. 144 D. 156 A. 120
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