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Byju's Answer
Standard XII
Mathematics
Point Slope Form of a Line
The value of ...
Question
The value of
k
, for which the system of equation
k
x
+
2
y
=
5
,
3
x
+
y
=
1
has no solution, is
A
5
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B
2
3
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C
6
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D
3
2
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Solution
The correct option is
A
6
The equations are
k
x
+
2
y
=
5
....(1)
3
x
+
y
=
1
....(2)
From (1), we have
y
=
−
k
x
2
+
5
2
∴
slope
m
1
=
−
k
2
From (2), we have
y
=
−
3
x
+
1
∴
slope
=
m
2
=
−
3
If the system has infinite number of solution, then
m
1
=
m
2
⇒
−
k
2
=
−
3
⇒
k
=
6
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0
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