Give the center & radius of circle: (x+3)^2 + (y-1)^2=16

An easy way to remember is to change the sign of the
numbers h and k as described in the previous response.  If they are negative, make them
positive, if they are positive, make them negative. Remember to write this as a
coordinate.

So, the center would be (-3,
1)

Also, to find the radius find the square root of the
number the equation is set equal to.

So, the radius would
be 4.