SOLUTION:

Question 283769:
Found 2 solutions by cassierussell, shevshevon:
Answer by cassierussell(3) (Show Source): You can put this solution on YOUR website!
Answer: Neither. The slopes of each line are not equal, therefore they are not parallel. The slopes of the lines do not have a product of -1, therefore they are not perpendicular.
Answer by shevshevon(1) (Show Source): You can put this solution on YOUR website!
4x+5y=6
5x+4y=5
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5y = -4x + 6
5y/5 = -4x/5 + 6/5
y = -4x/5 + 6/5 (Slope = -4x/5)
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4y = -5x + 5
4y/4 = -5x/4 + 5/4
y = -5x/4 + 5/4 (Slope = -5x/4)
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*So therefore the Answer is "Neither".
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