I'm currently practicing for my final calculus exam in 20 days time, it has a vector section, here is my problem.
When I need to find these parametric equations for either lines of planes, I need a directional vector, so as you would, take a point and subtract the other point, however these directional vectors cause my final answer to look different to the memos answers. Is there a specific way in which I need to subtract points to get a directional vector, like take the one that looks high in the R3 and subtract a lower one or could they be done in any order, why this is worrying is that the final exam is mostly multiple choice, so I would need it to look like the memos answer.