[Vi Nguyen]

Hi again, was wondering how to solve this question:

let v vector be from A(2, 0, -1) to B(1, 2, -3) find 2 vectors parallel to v vector.

I found that v=B-A=(-1,2,-2) but don't know how to find "2" vectors parallel to this.

[Unknown008]

You can just add any constant in front of the vector and multiply. The types of parallel line created hen you premultiply by a positive constant is called a like parallel vector, and a negative constant will give you an unlike parallel vector.

You can try this with a 2D vector, say, (1,1) multiplying by 2 will give (2, 2) and if you draw them on the same scale, they'll be parallel, but only not of the same length.