Question

Determine whether the lines through the pairs of points are parallel, perpendicular, or neither.

(1, -3) and (3, -2); (0, -2) and (2, -3)

Answer 1

find slopes of the lines between points:
(1,-3) & (3,-2):
m1=(-2-(-3))/(3-1) = 1/2
(0,-2) & (2,-3):
m2=(-3-(-2))/(2-0)=-1/2

if lines parallel - should have the same slope; not the case=no parallel
if lines perpendicular: m1=-1/m2; not the case= not perpendicular;
so, the answer is = neither

Answer 2

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