Question

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

Answer 1

\[ p : f(x,y)=(x-2)^2+(y-7)^2=16 \]

General

\[ f(x,y)=(x-u)^2+(y-v)^2=r^2\] where (u,v) is the center of the circle.

Answer 2

\( \color{Black}{\Rightarrow (x - h)^2 + (y - k)^2 = r^2}\)

\((h,k)\) is the center, and \(r\) is the radius.

Answer 3

a circle with centre at (a,b) and radius r has the equation:
\[(x-a)^{2}+(y-b)^{2}=r ^{2}\]

Answer 4

Thank you all, needed this extra help

Answer 5

You're welcome!