Question

Determine whether the vectors u and v are parallel, orthogonal, or neither.

u = <6, -2>, v = <2, 6>
Answer Choices:
(a)neither
(b)parallel
(c)orthogonal

Answer 1

take the dot product of u and v, what does it equal?

Answer 2

do you multiply 6 by -2 and 2 by 6?

Answer 3

@billj5

Answer 4

yes and sum those products, technically I think you did it wrong but it will give you same value

Answer 5

-12 and 12

Answer 6

-12 + 12

Answer 7

so 0 which means what? They're parallel

Answer 8

they are orthogonal if the dot product is 0

http://tutorial.math.lamar.edu/Classes/CalcII/DotProduct.aspx

Answer 9

awesome great would you be able to help me with another?

Answer 10

if you post another question, yes