Answer:
Perpendicular
Explanation:
Let's start by finding the slopes of both lines.
Line A's slope is 3 (this is given).
We can determine line B's slope with the two points given. The slope formula is
. Substitute in the values:
and simplify:
So the slope of line A is -1/3.
-1/3 and 3 multiply to -1, so this indicates that the two lines are perpendicular.