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Byju's Answer
Standard VI
Mathematics
Introduction to Algebra
The relation ...
Question
The relation between running time
(
a
)
and maintenance cost
(
z
)
is as given below:
Running time (
a
)
3
7
11
15
Maintenance cost (
z
)
9
17
25
33
A
z
=
3
a
−
2
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B
z
=
2
a
−
3
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C
z
=
2
a
+
3
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D
z
=
3
a
+
2
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Solution
The correct option is
C
z
=
2
a
+
3
The given table is,
Running time (
a
)
3
7
11
15
Maintenance cost (
z
)
9
17
25
33
It can be observed,
3
×
2
+
3
=
9
7
×
2
+
3
=
17
11
×
2
+
3
=
25
15
×
2
+
3
=
33
Hence,
z
=
2
a
+
3
Suggest Corrections
0
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The variable type and the correct relation between Running time (
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Maintainance cost (
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Q.
Calculate product moment correlation between age of cars and annual maintenance cost and comment.
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Annual maintenance
Cost (in ₹)
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1800
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