1.

The plane through the intersection of the planes x + y + z = 1 and 2x + 3y – z + 4 = 0 and parallel to y-axis also passes through the point (1)   (–3, 1, 1) (2)   (3, 3, –1)(3)   (–3, 0, –1)(4)   (3, 2, 1)

Answer»

Correct option  (4) (3, 2, 1)

Explanation:

Equation is (x + y + z – 1) + l(2x + 3y – z + 4) = 0

(1 + 2l)x + (1 + 3l)y + (1 – l)z + 4l – 1 = 

 As it is parallel to y-axis.



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