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Question

The point of intersection of line x−6−1=y+10=z+34 and plane x+y−z=3 is

A
(2,1,0)
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B
(7,1,7)
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C
(1,2,6)
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D
(5,1,1)
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Solution

The correct option is D (5,1,1)
The given line is x61=y+10=z+34=r(say) ..... (i)
And Plane is x+yz=3 ........ (ii)
x=r+6,y=1,z=4r3
Then, the point (r+6,1,4r3) lies on the line (i).
It is given that the plane and the line intersects
Thus, the point (r+6,1,4r3) satisfies the plane
(r+6)1(4r3)=3r=1
Required intersection point =(5,1,1).

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