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Linear Algebra

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Scaling and Length

LINALG-4EBXM7

Suppose $v\in\mathbb{R}^4$ has length $\lVert v\rVert$.

What is the length of the vector $6v$?

A

$\lVert v\rVert$

B

$6\lVert v\rVert$

C

$6^2\lVert v\rVert$

D

$6^3\lVert v\rVert$

E

$6^4\lVert v\rVert$