Determine if the following vector pairs are orthogonal, parallel or neither
1. v1 = <-6, 2> and v2 = <3, -1>
2. v1 = <5, 10> and v2 = <-6, 3>
1) ( -6, 2) , (3, - 1)
If parallel then Ax By = Ay Bx
(-6 * -1) = ( 2 * 3)
6 = 6
So...parallel
2) (5, 10) , (-6, 3)
If perpendicular then AxBx + AyBy = 0
(5 * - 6) + (10 * 3) =
-30 + 30 = 0
So...perpendicular
