Answer
Yes
Work Step by Step
For two vectors to be normal, or perpendicular to each other, their dot product should be 0.
Dot product of two vectors: $ * = uw + vz$
$<0.8,-0.6>*<0.3,0.4> = 0.8*0.3-0.6*0.4 = 0$
Dot product is 0, these vectors are normal.
