Determine the equation of the circle

graphed below.

-10 -9

-8 -7 -6 -5 -4 -3

Ņ

-1

10

9

y

8

7

6

5

4

3

2

1

-1

-2

-3

-4

-5

-6

-7

-8

-9

-10

1

2 3 4 5 6 7 8 9 10

X