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WorksheetsVariation Review
Total questions: 14
Worksheet time: 4hrs 30mins
Name
Class
Date
1.
Which graph shows direct variation?
a)
A
b)
B
c)
C
d)
D
2.
Which variation is represented in the graph?
a)
Direct
b)
Inverse
c)
Neither
3.
In a direct variation, y=39 when x=3. Find the value of y when x=2.
a)
0.15
b)
117
c)
58.5
d)
26
4.
If y varies inversely with x and if y = 15 when x = 32, find y when x = 12.
a)
25.6
b)
40
c)
5.63
d)
5760
5.
Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?
a)
y=1344x
b)
xy=1344
c)
y=5.25x
d)
xy=5.25
6.
Write an equation for this relationship.
a)
y=4x
b)
y=1/8x
c)
y=1/4x
d)
xy=16
7.
The number of words Maria typed varied directly with the amount of time she spent typing. If she typed 275 words in 5 minutes, how long would it take her to type 1,100 words?
a)
60500 minutes
b)
20 minutes
c)
55 minutes
d)
4 minutes
8.
The number of hours to clean a house varies inversely with the number of cleaners working. A house can be cleaned in 27 hours by 6 cleaners. How many cleaners would need to work in order to clean the house in 18 hours?
a)
4 cleaners
b)
10 cleaners
c)
9 cleaners
d)
36 cleaners
9.
Is the given table a direct or inverse variation? What is the constant of variation?
a)
Direct, 12
b)
Inverse, 12
c)
Direct, 1/12
d)
Inverse, 1/12
10.
The equation
xy = 25 represents:
xy = 25 represents:
a)
direct variation
b)
inverse variation
c)
Neither
11.
The equation y = 14/x is?
a)
direct variation
b)
inverse variation
c)
Neither
12.
The depth of a lake, d, varies directly with r, the amount of rainfall last month. If k is the constant of variation, which equation represents the situation?
a)
d = r/k
b)
d = k + r
c)
d = kr
d)
r = kd
13.
The given point represents an element of direct variation. Which of the following would be another point on this direct variation graph?
a)
(5, 2)
b)
(0, 0)
c)
(-2, -1)
d)
(1, 8)
14.
The following points represent an inverse variation: (2, 12) , (1, 24) , (3, 8). Which of the following could be another point that fits?
a)
(3, 9)
b)
(5, 5)
c)
(-12, 2)
d)
(4, 6)
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