I have lines such as that first line has 2 point (1,0,-1) and (4,1,-3) and when i check the sum which is (5,1,-4) it is not on the line.
Then I have line that has (2,-1,3) and (10,-5,15) and its sum is (12,-5,15) is on the line. I was wondering why the sum in some cases is on the line and in some it is not.
Yes exactly. We are talking here about the point not vector scalars. those are just point not vectors. I didnt know we can take scalar of points....My assumption is that if we have vector for example (1,2,3) then any vector k(1,2,3) is on same line...
am i correct?