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What is the equation, in standard form, of a circle with center (−5, −9) and radius 7?

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x__^2+y__^2=___

Respuesta :

msm555

Answer:

Solution given:

Centre(h,k)=(-5,-9)

radius (r)=7

we have

Equation of a circle is;

(x-h)²+(y-k)²=r²

Substituting value;

(x+5)²+(y+9)²=7²

(x+5)²+(y-9)²=49 is a required equation of a circle.
  • center(-5,-9)=(h,k)
  • Radius=7=r

Standard equation

  • (x-h)²+(y-k)²=r²
  • (x+5)²+(y+9)²=7²
  • (x+5)²+(y+9)²=49