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beckycott beckycott
  • 03-03-2017
  • Mathematics
Answered

A circle has its center at (-2, -3) and a radius of 3 units. What is the equation of the circle?

A(x+2)^2 + (y-3)^2 =9
B(x-2)^2 + (y-3)^2 =3
C(x+2)^2 + (y+3)^2 =9
D(x+2)^2 + (y+3)^2 =3

Verified Answer :

xphenomx
xphenomx xphenomx
  • 03-03-2017

Equation of circle is (x-h)^2 + (y-k)^2 = r^2
Plug the point and radius in, h=the x value, k=the y value, r=radius
Answer is C. (x+2)^2 + (y+3)^2 = 9

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