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Question: Answered & Verified by Expert
The value of $k$, such that $\frac{x-4}{1}=\frac{y-2}{1}=\frac{z-k}{2}$ lies on the plane $2 x-4 y+z=7$, is
MathematicsThree Dimensional GeometryMHT CETMHT CET 2022 (08 Aug Shift 2)
Options:
  • A no real value
  • B 4
  • C -7
  • D 7
Solution:
1223 Upvotes Verified Answer
The correct answer is: 7
To lie the line on the plane, the point on the line must lie on the plane
$\begin{aligned}
& \Rightarrow 2 \times 4-4 \times 2+k=7 \\
& \Rightarrow k=7
\end{aligned}$

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