Question

Given the points A (1, 2), B (-4, 4), C (-3, -3) and D (2, -5), determine ifLINE:AB and LINE:CD are parallel, perpendicular or neither.

A.

parallel

B. both perpendicular and parallel
C.

perpendicular

D. neither


MyANSWER: A

Answer 1

slope AB=(2-4)/(1+4)=2/5

SLOPE cD= (-3+5)/(-3-2)=3/-5

NOT PARALLEL, NOT PERPENDICULAR

CHECK MY CALCULATIONS