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Standard VII
Mathematics
Rate of Doing Work
What is the c...
Question
What is the constant of proportionality of the function in the given table?
Time (in min)
Depth (in yd)
2
-24
4
-48
6
-72
A
-12
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B
-24
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C
-3
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D
-6
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Solution
The correct option is
A
-12
Time in min (x)
Depth in yd (y)
2
-24
4
-48
6
-72
From the table, we observe:
At time x = 2 min, y = -24 yd
At time x = 4 min, y = -48 yd
At time x = 6 min, y = -72 yd
To find the constant of proportionality,
we need to find the value of
y
x
.
Constant of proportionality =
y
x
=
−
24
2
=
−
12
Continuing for second and third values from the table, we get:
Constant of proportionality =
−
48
4
=
−
72
6
=
−
12
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Similar questions
Q.
What is the constant of proportionality of the function in the given table?
Time (in min)
Depth (in m)
2
-24
4
-48
6
-72
Q.
Observe the table:
Time (in min)
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12
1
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If we represent the data in form of an equation, where x = Time and y = Percentage increase in productivity, what is its constant of proportionality?
Q.
Find the missing term in the table where constant of proportionality is -8.
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Find the missing term in the table where the constant of proportionality is -8.
Q.
Find the missing numbers in the following proportions in the table given below .
S. No.
Proportion
Product of extremes
Product of means
(i)
1
:
2
:
:
4
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8
(ii)
5
:
6
:
:
75
:
90
(iii)
3
:
4
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(iv)
2
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□
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(v)
3
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6
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:
12
:
□
72
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