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Math Help - Need help please

  1. #1
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    Need help please

    in a 50 word response how can you determine if two lines are perpendicular?
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  2. #2
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    Quote Originally Posted by kidsdomain View Post
    in a 50 word response how can you determine if two lines are perpendicular?
    Their gradients have a product of -1.
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  3. #3
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    Quote Originally Posted by kidsdomain View Post
    in a 50 word response how can you determine if two lines are perpendicular?
    Quote Originally Posted by Prove It View Post
    Their gradients have a product of -1.
    That's only six words (seven if you count ha ha the number).
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  4. #4
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    Quote Originally Posted by mr fantastic View Post
    That's only six words (seven if you count ha ha the number).
    Well I do want the OP to do SOME research Mr F :P
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