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0 votes
1.3k views
in Mathematics by (53.3k points)

Find the image of (1,3,4) in the plane x + 2y – z + 3 = 0 is

(a)  (1,1,–6)

(b)  (–1,–1,6)

(c)  (–1,1–6)

(d)  None of these 

1 Answer

+1 vote
by (63.3k points)
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Best answer

Correct option   (b) (–1,–1,6)

Explanation:

Image of (x1 ,y1 ,z1) in ax + by + cz + d = 0 is given by

x - 1/1 = y - 3/2 = z - 4/-1

= -2  x = -1, y = -1, z = 6

 image is (–1,–1,6)

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