Equation Of Circle Worksheet Page 2

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(
)
(a) Find the center
, h k and the radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.
(
)
(
)
2
+
+
2
=
2
x
1
2
y
2
18
3.
3
2
1
0
-3 -2 -1 0
1
2
3
4
5
6
-1
-2
-3
-4
-5
-6
+
+
=
2
2
x
y
4
x
6
y
3
0
4.
8
7
6
5
4
3
2
1
0
-1
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
-2
-3
-4
-5
-6
-7
-8
+
+
+
=
2
2
9
x
9
y
1 2
x
6
y
4
0
5.
2/1
5/3
4/3
1/1
2/3
1/3
0/1
- 2/1 - 5/3 - 4/3 - 1/1 - 2/3 - 1/3 0/1
1/3
2/3
1/1
4/3
5/3
2/1
- 1/3
- 2/3
- 1/1
- 4/3
- 5/3
- 2/1

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