Math

Find the center and radius of the circle with equation x2 + y2 - 6x + 10y + 9 = 0.

center ( ? , ? )
radius ?

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asked by Carol
  1. just complete the squares for x and y:

    x^2-6x + y^2+10y = -9
    x^2-6x+9 + y^2+10y+25 = -9+9+25
    (x-3)^2 + (y+5)^2 = 25

    I assume you can take it from there, eh?

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