4 divided by 561 is equal to .007 but I think you mean 561/4 = 140.25
Multiplying a vector
by a constant
gives you a new vector whose components are the same as
, but scaled by
:

So we have


Vector addition is just a matter of adding the corresponding components together:

Then


denotes the norm/magnitude of the vector
:

We have


Hypothenuse is the longest side
You can see the X is the longest
Solution: A. X
Answer: B
it has a repeating x value which makes it not a function