Find the cartesian equation of a line passing through two points (1,-9

1.	Find the cartesian equation of a line passing through two points (1,-9,8) and (4,-1,6).
A.	( frac{x+1}{3}= frac{y-9}{8}= frac{-z-8}{2} )
B.	( frac{x-1}{3}= frac{y+9}{8}= frac{z-8}{-2} )
C.	( frac{x-1}{7}= frac{y+9}{-2}= frac{z-8}{5} )
D.	( frac{2x-1}{3}= frac{6y+9}{8}= frac{4z-8}{-2} )
Answer» C. ( frac{x-1}{7}= frac{y+9}{-2}= frac{z-8}{5} )

Discussion

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Find the cartesian equation of a line passing through two points (1,-9,8) and (4,-1,6).
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