Question

MEDAL - Am I right?

Which of the following vectors are orthogonal to (-1,3)? Check all that apply.
A. (3,1)
B. (1,3)
C. (-2,-3)
D. (-6,-2)

Answer 1

A & D

Answer 2

correct

Answer 3

If the dot product is zero, they're orthogonal.

A: (-1,3) dot (3,1) is zero
D (-6,-2) dot (-1,3) is zero

:)

Answer 4

B and C don't have a dot product of zero.

Answer 5

Thanks!