SOLUTION: Parallel, perpendicular pr neither? Y=-4x-91 Y=-121-5x

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Question 534869: Parallel, perpendicular pr neither?
Y=-4x-91
Y=-121-5x
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel, perpendicular pr neither?
Y=-4x-91
Y=-121-5x
.
Examine the slope of each line:
-4 and -5
since they're not the same, they're not parallel
since they don't multiply to give you -1 they're not perpendicular
therefore
answer: Neither