Question

Will Medal!

Let v = (5, -2) and w = (-10, 4). Which of the following is true? Check all that apply.

A. w = -2v
B. The y-component of w is 4.
C. v * w = -58
D. v and w are perpendicular
***My Answer: B, C***
Please Help!

Answer 1

A, B, and C

Answer 2

hint:
\[\Large \left( { - 10,4} \right) = - 2\left( {5, - 2} \right)\]