A certain circle can be represented by the following equation. x^2+y^2+8x-16y+31=0x 2 +y 2 +8x−16y+31=0x, squared, plus, y, squared, plus, 8, x, minus, 16, y, plus, 31, equals, 0 What is the center of this circle ? ((left parenthesis ,,comma ))right parenthesis What is the radius of this circle ? units

center =

Radius = 7 units

Step-by-step explanation:

Given: Equation of circle is

To find: Radius and center of the circle

Solution:

Equation of circle is

Here, is the center and r is the radius.

Use formula

On comparing this equation with equation of circle,

center =

Radius = 7 units

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.

sorry i just need to anwers this to get points

step-by-step explanation: