Question

Let V=(8, -4) and W=(-4, 2). Which of the following is true?

Answer 1

The x-component of V is 4.
The y-component of W is2
V•W=40
V=-2W

Answer 2

(x,y)
W is (-4,2)
The y-component of W is 2.

Answer 3

okay, so then A is wrong because x-component would be 8 for V, right?

Answer 4

Would D also be correct, since -4•-2 is 8 and 2•-2 is -4, giving (8, -4)?

Answer 5

Yep, answer was B and D