janessagall2005 janessagall2005
  • 12-05-2021
  • Mathematics
contestada

What is the equation of a circle with center at (4, -2) and a radius of 7?

Respuesta :

gurungrekha491
gurungrekha491 gurungrekha491
  • 12-05-2021

let h= 4, k=-2 and r= 7 then

(x-h)^2 + (y-k)^2 = r^2

(x-4)^2 + (y+2)^2 = 7^2

x^2 -8x +16 + y^2 +4y +4 = 49

x^2 +y^2 -8x +4y +16 +4-49 = 0

x^2 + y^2 -8x +4y -29 = 0 is the required eq

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