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    Umpalumpa's Avatar
    Umpalumpa Posts: 6, Reputation: 1
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    #1

    Jun 24, 2008, 08:39 AM
    Circle Equations
    I have to figure out if (-1,7) is on, inside, or outside a cvircle with this equation:S>>> x(squared) + y (squared) = 45. How do I even figure this out:S
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Jun 24, 2008, 08:53 AM
    Plug in your given values for x and y. If you get 45, then it is on the circle. If it is less than 45 it is inside. If it is more than 45, it is outside.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Jun 25, 2008, 04:17 AM
    You can also draw the line on graph paper... Plotting the point (-1, 7) will tell you if its on, inside or outside that circle!
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