(x + y)2 + ( y + 3)2 = 100

Step-by-step explanation:

This is the form of a circle. Use this form to determine the center and radius of the circle.

(

x

−

h

)

2

+

(

y

−

k

)

2

=

r

2

Match the values in this circle to those of the standard form. The variable  

r

represents the radius of the circle,  

h

represents the x-offset from the origin, and  

k

represents the y-offset from origin.

r

=

10

h

=

0

k

=

0

The center of the circle is found at  

(

h

,

k

)

.

Center:  

(

0

,

0

)

These values represent the important values for graphing and analyzing a circle.

Center:  

(

0

,

0

)

Radius:  

10