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Byju's Answer
Standard XII
Mathematics
Intersection
The straight ...
Question
The straight line
a
x
+
b
y
+
c
=
0
, where
3
a
+
2
b
+
4
c
=
0
are concurrent at the point
A
(
1
2
,
3
4
)
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B
(
3
4
,
1
2
)
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C
(
−
3
4
,
−
1
2
)
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D
(
−
3
4
,
1
2
)
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Solution
The correct option is
A
(
1
2
,
3
4
)
3
a
+
2
b
+
4
c
=
0
3a+2b+4c=0
3
4
34
a
+
2
b
4
+
4
c
c
a+2b4+4cc
=
0
=0
=>
3
4
34
a
+
1
2
a+12
b
+
c
=
0
b+c=0
=> The set of lines
a
x
+
b
y
+
c
=
0
ax+by+c=0
passes through
(
3
4
,
1
2
)
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