Answer
Neither.
Work Step by Step
If a vector $v$ can be obtained by multiplying a vector $w$ by a constant, then $v$ and $w$ are parallel. If the dot product of two vectors is $0$ then they are orthogonal.
Here $k(-2i+2j)\ne-3i+2j$, hence they are not parallel.
$(-2i+2j)(-3i+2j)=(-2)(-3)+(2)(2)=6+4=10\ne0$, hence they are not orthogonal.
