This is the equation for a circle which without numbers looks like (x – h)^2 + (y – k)^2 = r^2
This means that the radius is the square root of what ever number the equation is equal to. Since in this case it is 4 the square root of 4 is 2
The center of the circle is baced off h and k. In order to find where each one of them go, you would do the opposit of the number that is with them. With this equation the opposit of 4 is -4 so it will go -4 in the x direction and the opposit of -7 is 7 so it would go 7 in the y direction
Radius: 2
Center: (-4,7)