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Question 1304d
Vectors II: Lines and Planes
Equation of a Plane from IV
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The line
p
{p}
p
is given by
p
:
r
⋅
(
−
1
3
−
4
)
=
0.
p: \mathbf{r} \cdot \begin{pmatrix} - 1 \\ 3 \\ - 4 \end{pmatrix} = 0.
p
:
r
⋅
−
1
3
−
4
=
0.
Find the coordinates of the point,
B
′
,
{B',}
B
′
,
obtained when the point
B
(
3
,
−
9
,
12
)
{B \left( 3, - 9, 12 \right)}
B
(
3
,
−
9
,
12
)
is reflected in the plane
p
.
{p.}
p
.
Attempt
B
′
{B'}
B
′
(
{\Big(}
(
,
,
)
{\Big)}
)
Answer
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