The standard form equation of any circle centered at a point (a,b) with radius r is the following equation:
[tex](x-a)^2+(y-b)^2=r^2[/tex]
The center is (5,-3) and the radius is 4. Simply plug these into the equation I just presented you with.
[tex](x-5)^2+(y-(-3))^2=4^2[/tex]
[tex](x-5)^2+(y+3)^2=16[/tex]
And... that's it!
