Question

How do you write the equation for a circle with center (-3, -5) and radius 4?

Answer 1

The equations for a circle with centre `(a, b)` and radius `r` is `(x-a)^2+(y-b)^2=r^2`

Explanation:

So in this case `a=-3`, `b=-5` and `r=4`, and the equation is:

`(x+3)^2+(y+5)^2=16`

graph{(x+3)^2+(y+5)^2=16 [-9.71, 10.29, -9.72, 0.28]}