anonymous
  • anonymous
What is the equation of the circle with center (2, -5) that passes through the point (–2, 10)?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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jdoe0001
  • jdoe0001
do you know what the "circle formula" is?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
(x - h)^2 + (y - k)^2 =r^2 So, (2 - -2)^2 + (-5 - 10)^2?

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jdoe0001
  • jdoe0001
ok, well, you're given the (h,k) for the center, which are the "x" and "y" coordinates, which is your 1st point up there now, you just need the radius you have a 2nd point, from the center to a point in the circle, that'd give you the radius since you have 2 points, just use the distance formula to get the distance from THAT point to THE center point, and that'd give you the radius http://0.tqn.com/d/math/1/0/A/1/distance.gif
jdoe0001
  • jdoe0001
well, yeah, your way also works :)
anonymous
  • anonymous
(x – (–2))^2 + (y – 10)^2 = 241

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