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Equations of circles (graph)
供稿人: Smith
(原作者: Crouch)
Center
(
Radius:
,
)
Center
(
Radius:
0

x2 + y2 = 3

,
0
3
)
What is the equation of the circle?

x2 + y2 = 9

2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:

(x-5)2 + (y-4)2 = 9

5
,
4
3
What is the equation of the circle?
)

(x+5)2 + (y+4)2 = 9

2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
6
(x         )2 + (y         )2 =
,
3
2
What is the equation of the circle?
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
3
(x         )2 + (y         )2 =
,
5
2
What is the equation of the circle?
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
4
,
-1
(x         )2 + (y         )2 =
 5
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
8
,
-2
(x         )2 + (y         )2 =
1
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
,
)
2
-2
4
-4
6
-6
2
-2
4
-4
6
-6
8
-8
10
-10
Center
(
Radius:
-6
,
2
(x         )2 + (y         )2 =
1
)
参加了这次测试的学生也参加了 :
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