You can put this solution on YOUR website! Determine whether the lines x-5y=15 and -5x - y = 2 are parallel, perpendicular, or neither.
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Compare the slopes:
y = (1/5)x-3
y = -5x -2
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(1/5)(-5) = 1 so the lines are perpendicular.
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Cheers,
Stan H.
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