Variation and Modeling
Quiz
•
Mathematics
•
University
•
Hard
Loren Sibulo
Used 13+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The cost of a taxi fare varies directly as the distance (x) travelled. When the distance is 60 km, the cost is $35. Find the constant of proportionality.
K=12/7
y=(12/7) x
K=7/12
x=(7/12) y
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The width (w) of a rectangle varies directly to its length (l). If the width is 8 and the length is 2, determine its equation of variation.
K=¼
K=4
l=¼w
D. w=4l
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given that y varies directly as the cube of x and that y = 21 when x = 3. Find the constant of proportionality and the equation of variation.
K=7/9 is the constant of proportionality and the equation of variation is y=(7/9)x.
K=9/7 is the constant of proportionality and the equation of variation is y=(9/7)x.
K=7 is the constant of proportionality and the equation of variation is y=7x D.
K=1/7 is the constant of proportionality and the equation of variation is y=(1/7)x
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It describe a situation where one variable depends on two (or more) other variables, and varies directly as each of them when the others are held constant?
Direct variation
Joint variation
Combined variation
Inverse variation
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the equation of variation if the area of a rectangle is jointly proportional to its length and width with constant of proportionality 1?
A=KLW
A=L/W
A=LW
A= KL²W
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Combined variation is the separation of direct, inverse, and joint variation. -
True
False
Maybe
I don't know
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If x varies directly as the square of y and inversely as z, where x is 12, y is 3, and z is equal to six. What is the value of constant of proportionality or k?
10
9
8
7
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