Question

how do you Write the equation of each circle.



Center(3,7) with a radius of 4 units.

Answer 1

(x-3)^2+(y-7)^2=16

Answer 2

what does the radius do or do i not use it?

Answer 3

radius is 4^2=16

Answer 4

general equation of a circle is
\[(x-a)^{2}+(y-b)^{2} = r^{2}\]
a and b are the center. and r is the radius.