Vectors question C4 urgent !!!!!Watch
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
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 .