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    GDss's Avatar
    GDss Posts: 13, Reputation: 1
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    #1

    Oct 22, 2009, 11:33 AM
    Homework on Coordinate Geometry
    Hi guys. I'm currently doing my homework but I'm stuck on this question and I need help ASAP

    " find K given that (-3,k) is 7 units away from (2,4)"
    How do I solve this question. And which formula do I use
    Thanks guys so much.
    Xxxx
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 22, 2009, 11:40 AM

    The distance between two points on a coordinate grid can be found from Pythagorus:



    Here . Use these values in the above equation and solve for .
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    GDss Posts: 13, Reputation: 1
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    #3

    Oct 22, 2009, 11:45 AM

    Thank you ebaines :)!!
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    ebaines Posts: 12,131, Reputation: 1307
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    #4

    Oct 22, 2009, 11:51 AM

    Your are welcome! Don't forget that there are two possible answers.
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