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Byju's Answer
Standard XII
Mathematics
Distance between Parallel Lines
Find the equa...
Question
Find the equation of the plane passing through the points
(
2
,
3
,
−
4
)
and
(
1
,
−
1
,
3
)
and parallel to the
x
−
a
x
i
s
.
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Solution
A vector in the plane is
→
u
=
⎛
⎜
⎝
1
−
1
3
⎞
⎟
⎠
−
⎛
⎜
⎝
2
3
−
4
⎞
⎟
⎠
=
⎛
⎜
⎝
−
1
−
4
7
⎞
⎟
⎠
A vector direction for the X-axis is
→
v
=
⎛
⎜
⎝
1
0
0
⎞
⎟
⎠
So,
A normal vector to the plane is
∣
∣ ∣ ∣
∣
^
i
^
j
^
k
−
1
−
4
7
1
0
0
∣
∣ ∣ ∣
∣
^
i
(
0
−
0
)
−
^
j
(
0
−
7
)
+
^
k
(
0
+
4
)
⟨
0
,
7
,
4
⟩
The equation of the plane is
0
(
x
−
2
)
+
7
(
y
−
3
)
+
4
(
z
+
4
)
=
0
7
y
−
21
+
4
z
+
16
=
0
7
y
+
4
z
−
5
=
0
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