1. The problem statement, all variables and given/known data Point A (1, -1, 2) Line s = 2i - j + t(3i -j +k) 3. The attempt at a solution Ordinarily these are pretty obvious, but in this case the line is also a parametrized vector. So if I consider r = r0 + st And sub in s as I would do normally, I'd end up getting t^2's, and that's not the correct answer. The answer is r = (1, -1, 2) + t(3, -1, 1) Which looks like the the t part of the original s line was kept with a new position vector (given point). Why is this?