$\vec{A} = c A_x \hat{i} + A_y \hat{j} = <3, 2>$ where $\hat{i}$ is a unit vector in the x direction and $\hat{j}$ is in the y direction
$\vec{B} = <B_x, B_y> = B_x \hat{i} + B_y \hat{j} + B_z \hat{k}$
$\vec{A} + \vec{B} = <A_x + B_x, A_y + B_y, A_z + B_z>$
$\vec{A} = 2\hat{i} + 1\hat{j}$
$\vec{A} - \vec{B} = \vec{A} + (-1)\vec{B}$
So if $\vec{A} = <4, 3>$ and $\vec{B} = <2, 5>$
$\vec{A} - \vec{B} = <4 - 2, 3 - 5>$
Problem 1: show this graphically
