Practice Test 12

Given $\mathbf{v} = \langle 3,4\rangle$, what are the components of $-2\mathbf{v}$?​

For vector $\mathbf{v} = \langle 5,0\rangle$ (an arrow 5 units to the right along the $x$-axis), what is the effect of multiplying $\mathbf{v}$ by $\tfrac{1}{2}$ on its length and direction?​