anonymous
  • anonymous
Please help!!!!! MEDAL AND FAN!!!!! Give the center coordinates (x,y) of the circle:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[(x+3)^{2}+(y-4)^{2}=36\]
triciaal
  • triciaal
equation of a circle (x-h)^2 + (y-k)^2 = r^2 center (h,k) and radius r
anonymous
  • anonymous
Center = (-3,4) This is because, as triciaal said, in the equation (x+3)2+(y−4)2=36, 3=h and 4=k (H,K) are the coordinates of the center.

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anonymous
  • anonymous
Oh ok
amilapsn
  • amilapsn
The definition of the circle is: the loci of a point which is moving at constant distance from a fixed point. So if the point is (h, k) and the constant distance is r, by the distance formula: \[\sqrt{(x-h)^2+(y-k)^2}=r\] After squaring, equation of the circle: \[(x-h)^2+(y-k)^2=r^2\]
anonymous
  • anonymous
When multiplied out, we obtain the "general form" of the equation of a circle. Notice that in this form we can clearly see that the equation of a circle has both x2 and y2 terms and these terms have the same coefficient (usually 1).
anonymous
  • anonymous
Wait so which explanation should I go with because I a bit confused
anonymous
  • anonymous
@ikram002p
triciaal
  • triciaal
all are correct! different amount of details.
anonymous
  • anonymous
ok thx
anonymous
  • anonymous
yeah there all the same
anonymous
  • anonymous
But..... the first time I did this problem, I put -3,4 for my answer and got it wrong
freckles
  • freckles
ordered pairs should be in the form (h,k) that is you should have (-3,4)
freckles
  • freckles
Maybe they already included the ( ). Don't know.
anonymous
  • anonymous
oh ok I will put it in parentheses
anonymous
  • anonymous
Could y'all help me on on more problem?
anonymous
  • anonymous
*one
anonymous
  • anonymous
Sure!
anonymous
  • anonymous
\[(x + 1)^{2} + (y - 6)^{2}= 2.25\]
anonymous
  • anonymous
Would the coords be (-1,6)?
freckles
  • freckles
yes the center would be (-1,6)
anonymous
  • anonymous
Absolutly right!
anonymous
  • anonymous
thx

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