SOLUTION: Given the equations of two lines how can you tell if two lines will be perpendicular? I need to set up an equation.

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Question 543242: Given the equations of two lines how can you tell if two lines will be perpendicular? I need to set up an equation.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The product of the two slopes must be -1.
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Example:
If one of the slopes is 1/2
the other slope must be -2
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Cheers,
Stan H.
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