# Vectors question C4 urgent !!!!!

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#1
http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf

when doing this paper, for question 4 a i got a value of -10,15,-5 for the direction vector of the equation of the line, however in the mark scheme they simplified the vectors to -2,3,1 for some reason and i don't understand why.

mark scheme here
http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf
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2 years ago
#2
Vectors which are parallel represent the same direction vector.

Two vectors and are parallel if and only if there is a non-zero scalar for which .

In your case, the vectors and are parallel since .
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