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Equation of a line passing through the points (3,1,2) and (-1,2,1) is
A. `(x+3)/(-4)=(y-1)/(1)=(z-2)/(1)`
B. `(x-3)/(-4)=(y-1)/(1)=(z-2)/(1)`
C. `(x-3)/(-4)=(y-1)/(1)=(z-2)/(-1)`
D. `(x-3)/(-4)=(y-1)/(1)=(z-2)/(1)`

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Correct Answer - C
Equation of a line passing through the point (3,1,2) and (-1,2,1) is
`(x-3)/(-1-3)=(y-1)/(2-1)=(z-2)/(-2) Rightarrow (x-3)/(-4)=(y-1)=(z-2)/(-1)`

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