WorksheetsVARIATION
Total questions: 10
Worksheet time: 10mins
1. Which of the following mathematical statements is an example of combined variation, where k is the constant of variation?
A. Y = kab²
B. Y = kab²/c
C.Y = kb²
D. k = a/b
2. If x varies directly as y and inversely as r, then which of the following equations describes the relation among the three variables x, y and r?
A. x = ky /r
B. r = ky/x
C. x = kr /y
D. x = y /r
3. What is the constant of variation in the equation n = 8x?
A. x
B. n
C. 8
D. 8x
4. The electric power P varies jointly as the resistance R and the square of the current I can be written as
A. P = RI²
B. P = RI
C. P = I/R
D. P = kRI²
5. What happen to D when R is doubled in the equation D = 10R?
A. D is tripled
B. D is doubled
C. D becomes zero
D. D is halved
6. The number of cake slices c varies inversely as the number of persons n sharing the a whole cake, can be written as
A. c = kn
B. k = c/n
C. c= k/n
D. n = kc
7. Z varies directly as the square of w and inversely as h can be translated as
A. Z = w/h
B. z = kw²/h
C.Z = kwh
D. z = kwh²
8. The area A of a parallelogram varies jointly as the base b and altitude h.
A. A = kbh
B. B = kh/A
C. A = bh
D. A = kh/b
9. The income ( I ) of a dressmaker earning k pesos per hour varies directly as the number of hours ( h ) she works.
A. H = k I
B. I = h/k
C.I = kh
D. I = k/h
10. The bus travels a distance of d km in t hours. The formula that relates d to t is d = kt. What kind of variation is it?
A. Joint
B. Direct
C. Inverse
D. Combined
