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Questions  

The equation of the line passing through the points  1,2,3,2,1,2is 

a
x−12=y−2−1=z−32
b
x−11=y−2−3=z−3−1
c
x−21=y+12=z−13
d
x−21=y+12=z+13

detailed solution

Correct option is B

The equation of the line joining the points Ax1,y1,z1,Bx2,y2,z2 isx−x1x2−x1=y−y1y2−y1=z−z1z2−z1Therefore, the equation of the line joining the points 1,2,3,2,−1,2 is  x−11=y−2−3=z−3−1

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