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Math Help - slope problem

  1. #1
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    slope problem

    given: A(2,-2) B (5,3) c ( -5,9)
    prove ABC i s a right triangle using the slope formula

    slope of ab = 3 - -2/ 5 - 2 and i got 5/3
    slope of bc = 9 -3 / -5 - 5 and i got 6/-10

    this doesnt look right can someone tell me what i did wrong?
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  2. #2
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    Quote Originally Posted by zelda1850 View Post
    given: A(2,-2) B (5,3) c ( -5,9)
    prove ABC i s a right triangle using the slope formula

    slope of ab = 3 - -2/ 5 - 2 and i got 5/3
    slope of bc = 9 -3 / -5 - 5 and i got 6/-10

    this doesnt look right can someone tell me what i did wrong?
    hi zelda 850,
    you did it well just change -6/10 to -3/5 but the slope products come out -1 in either case

    bjh
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