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How to find a vector parallel to a line? 
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#1
Sep709, 03:04 PM

P: 66

How do I find the vector parallel to the line x+2 = 1/2y = z3 ?
the book says its < 1,2,1 > but I have no idea how to get there? 


#2
Sep709, 05:31 PM

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P: 26,157

Hi r_swayze!
Just go for the obvious … that line is parallel to the line x = 1/2y = z, from which it's pretty obvious that if you increase x by 1, the you increase y by 2, and z by 1 


#3
Sep709, 05:44 PM

P: 66

oh I think I see now, so the +2 and 3 from the x and z equations are just telling the shift in position?



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