Question

(x+2)^2+(y+1)^2=16 whats the center

Answer 1

(x-h)^2+(y-k)^2=r^2
That has center (h,k)
Make your equation look like that one and identify h and k and you'll have your center.

Answer 2

2,1

Answer 3

not quite

Answer 4

You didn't make your equation look like the one I posted. Pay attention to the signs.

Answer 5

-2,-1

Answer 6

Very Good!!

Answer 7

would the radius equal4