Question

Determine whether the vectors u and v are parallel, orthogonal, or neither. u=8i+4j v=-2i-j

Answer 1

hey, do the same with the previous question. just dot them and consider whether the answer is 0 or not, if it is 0--> they are perpendicular
if it is not 0--> they are not perpendicular
and then test for parallel.

Answer 2

I got the dot to be -13

Answer 3

-3