Question

Which is an equation of a circle with center (-5, -7) and radius 6?

a)(x - 5)2 + (y - 7)2 = 6

B)(x + 5)2 + (y + 7)2 = 6
c)(x + 7)2 + (y + 5)2 = 36
D)(x + 5)2 + (y + 7)2 = 36

Answer 1

the equation of a circle with center \((a,b)\) and radius \(r\) is \((x-a)^2+(y-b)^2=r^2\)