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Byju's Answer
Standard X
Mathematics
Equations Reducible to a Pair of Linear Equations in Two Variables
For what valu...
Question
For what values of k will the pair of equations
x
+
2
y
+
7
=
0
,
and
2
x
+
k
y
+
14
=
0
represent coincident lines?
A
3
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B
6
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C
4
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D
9
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Solution
The correct option is
C
4
Given system of equations are
x
+
2
y
+
7
=
0
,
and
2
x
+
k
y
+
14
=
0
Condition for coincident lines is
a
1
a
2
=
b
1
b
2
=
c
1
c
2
a
1
=
1
,
a
2
=
2
,
b
1
=
2
,
b
2
=
k
1
2
=
2
k
⇒
k
=
4
Suggest Corrections
0
Similar questions
Q.
For what values of k will the pair of equations
x
+
2
y
+
7
=
0
and
2
x
+
k
y
+
14
=
0
represent coincident lines?
Q.
For what value of
k
, the following system of equation will represent the coincident lines?
x
+
2
y
+
7
=
0
2
x
+
k
y
+
14
=
0
Q.
For which value of k will the equations
x
+
2
y
+
8
=
0
and
2
x
+
k
y
+
14
=
0
represent coincident lines?
Q.
For what value of k, the following system of equations will represent the coincident lines?
x + 2y + 7 = 0
2x + ky + 14 = 0