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Byju's Answer
Standard XII
Mathematics
Condition for Coplanarity of Four Points
What is the e...
Question
What is the equation to the plane through
(
1
,
2
,
3
)
parallel to
3
x
+
4
y
−
5
z
=
0
?
A
3
x
+
4
y
+
5
z
+
4
=
0
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B
3
x
+
4
y
−
5
z
+
14
=
0
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C
3
x
+
4
y
−
5
z
+
4
=
0
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D
3
x
+
4
y
−
5
z
−
4
=
0
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Solution
The correct option is
B
3
x
+
4
y
−
5
z
+
4
=
0
The given equation is
3
x
+
4
y
−
5
z
=
0
Let the equation of parallel plane be
3
x
+
4
y
−
5
z
=
k
where k is a constant
The plane passes through the point
(
1
,
2
,
3
)
So,
3
⋅
1
+
4
⋅
2
−
5
⋅
3
=
k
⇒
−
4
=
k
So the equation of the plane is
3
x
+
4
y
−
5
z
=
−
4
⇒
3
x
+
4
y
−
5
z
+
4
=
0
Option C is true
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