anonymous
  • anonymous
Find an equation of the circle that satisfies the stated conditions. (Give your answer in standard notation.) center (C)=(-2,3) passing through P(3,1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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jdoe0001
  • jdoe0001
so... do you know the equation for a circle?
jdoe0001
  • jdoe0001
http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png
jdoe0001
  • jdoe0001
so how to find the radius? well, the radius is the distance between the center and a point it "passes through" and you have those 2 points, how far apart are there? well \(\bf \text{distance between 2 points}\\ d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}\)

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anonymous
  • anonymous
I worked it out and im sure I did it right, but the standard notation part is getting me..
jdoe0001
  • jdoe0001
the (h, k) is just the center, so your center is at (-2, 3) so \(\bf (x-h)^2+(y-k)^2=r^2 \implies (x-(-2))^2+(y-(3))^2=r^2\\ \implies (x+2)^2+(y-3)^2=r^2\)
anonymous
  • anonymous
i had something similar but neither are right. i wonder if it's because of the standard notation

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