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Byju's Answer
Standard X
Mathematics
Introduction to LOCI
The equation ...
Question
The equation of plane containing z-axis and passing through the point(1,2,3) is:
A
x
=
2
y
−
z
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B
2
x
=
y
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C
9
x
=
6
y
−
7
z
=
0
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D
x
+
2
y
−
z
=
0
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Solution
The correct option is
B
x
=
2
y
−
z
The plane contains z-axis and the point
(
1
,
2
,
3
)
Any plane which contains z-axis is of
(
0
,
0
,
1
)
∴
By cross product of the two points we can find the equation.
∴
∣
∣ ∣
∣
x
y
z
0
0
1
1
2
3
∣
∣ ∣
∣
=
0
⇒
−
2
x
+
y
=
0
⇒
y
=
2
x
o
r
2
x
=
y
(ans.)
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0
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