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MHT CET · Maths · Three Dimensional Geometry

The Cartesian equation of a plane which passes through the points \(\mathrm{A}(2,2,2)\) and making equal nonzero intercepts on the co-ordinate axes is

  1. A \(x+y+z=6\)
  2. B \(x-2 y+z=0\)
  3. C \(2 x+y+z=7\)
  4. D \(x-y+z=6\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(x+y+z=6\)

Step-by-step Solution

Detailed explanation

Let \(a, b, c\) be the intercepts on the coordinate axes and we have \(a=b=c\).
\(\therefore \quad \frac{\mathrm{x}}{\mathrm{a}}+\frac{\mathrm{y}}{\mathrm{a}}+\frac{\mathrm{z}}{\mathrm{a}}=1\) is required equation of plane.
Since plane passes through point \((2,2,2)\), we write \(\frac{2+2+2}{\mathrm{a}}=1 \Rightarrow \mathrm{a}=6\)
\(\therefore \quad\) Equation of plane is \(\mathrm{x}+\mathrm{y}+\mathrm{z}=6\)