Are the two lines parallel, perpendicular, or neither?

Question

The equation for the question is:

Line A has coordinates (-2, 6) and (2, 4). 

Line B has coordinates (1, -1) and (3, 3).

Were post to figure out if the lines are parallel, perpendicular, or neither. And I need help figuring it out.

Answer 1

slope of A is (6-4)/(-2--2)= 2/-4 =-- 1/2

slope of B is (3--1)/(3-1) = 4/2 = 2

the slopes are negative inverses. That means the lines are perpendicular