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ineedhelponmyhw

  • 3 years ago

AB passes through the points (1, 3) and (3, 17). If CD is perpendicular to AB, what is the slope of CD?

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  1. sarah43
    • 3 years ago
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    |dw:1342657794830:dw| so if AB's slope is 7, CD's is -1/7 because perpendicular lines have opposite slopes

  2. ineedhelponmyhw
    • 3 years ago
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    omg thank you!

  3. sarah43
    • 3 years ago
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    ur welcome :). just remember to choose a best response :)

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