1.
Find the radius of the circle with equation (
x
- 4)
2
+ (
y
- 7)
2
= 36.
A.
4
B.
6
C.
36
D.
7
Hint
2.
Which is an equation of the circle with center at
P
(-2, 5) and radius 2?
A.
(
x
- 2)
2
+ (
y
+ 5)
2
= 4
B.
(
x
+ 2)
2
+ (
y
- 5)
2
= 2
C.
(
x
- 2)
2
+ (
y
+ 5)
2
= 2
D.
(
x
+ 2)
2
+ (
y
- 5)
2
= 4
Hint
3.
Which of the following points is on the circle with equation
(
x
- 7)
2
+ (
y
+ 3)
2
= 25?
A.
(17, 12)
B.
(10, 1)
C.
(-8, -23)
D.
(5, -6)
Hint
4.
The center of the circle with equation (
x
+ 4)
2
+ (
y
+ 15)
2
= 49 has coordinates ________.
A.
(4, 15)
B.
(4, -15)
C.
(-4, 15)
D.
(-4, -15)
Hint
5.
Find the diameter of the circle with equation (
x
+ 8)
2
+ (
y
- 9)
2
= 121.
A.
11
B.
121
C.
17
D.
22
Hint