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March 28, 2017

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x^2+y^2=36 is a circle. How can you tell without actually plotting? Where is the center?

  • math - ,

    The center placed in the point (0,0)

    radius = sqrt ( 36 ) = 6

  • math - ,

    ya gotta know that

    (x-h)^2 + (y-k)^2 = r^2

    is the equation for a circle of radius r with center at (h,k)

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