Question

Write an equation of the circle with center (2,-5) and radius 4.

Answer 1

This should be a write-as-fast-as-you-can sort of problem. You wither know the form or you don't. If you don't - memorize! You'll need it.

\[(x-2)^2 + (y+5)^2 = 4^2\]

Done

Answer 2

Thanks.