JEE Main 2019 Mathematics question
The plane passing through the point (4, −1, 2) and parallel to the lines and also passes through the point:
Answer: (B)
Solution
Normal (3, −1, 2) × (1, 2, 3) ∝ (1, 1, −1); plane x + y − z = 1 contains (1, 1, 1).