. Equation of the plane containing the lines
A. x + y – 4z = 6
B. x - y + 4z = 6
C. x + y + 4z = 6
D. None of these
Best Answer
Ans: D
Sol: Equation of any plane containing the line 
where a + 3b – c = 0
This plane will also contain the second line if
2a – 3b + c = 0 and 4a b(0 – 2) + c(0 + 4) = 0
Solving these equation, we get
a = 0, b = 0, c = 0.
That means the given lines are non–coplanar.
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