Answer:
(a)Perpendicular
(b)Parallel
(c)neither parallel nor perpendicular.
Step-by-step explanation:
Definition
• Two lines are ,parallel, if they have the ,same slope.
,
• Two lines are ,perpendicular, if the ,product of their slopes is -1.
Part A
Lines PQ and JK are perpendicular.
Part B
Lines EF and CD are parallel.
Part B
Lines WX and YZ are neither parallel nor perpendicular.
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