Question

Give the equation for a circle with the given center and radius.

Center at (2, -9), radius = 3

Answer 1

Equation of circle is of the form

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

Where centre is (h,k) and radius is r .

So for the given question, centre is (2,-9) and radius =3

`(x-2)^2+(y+9)^2=9`

And that's the required equation of circle .