| |
| |
1. |
The center of the circle with equation (x - 3)2 + (y + 2)2 = 4 has coordinates ___. |
| |
|
A. |
(-3, -2) |
B. |
(3, -2) |
| |
|
C. |
(-3, 2) |
D. |
(3, 2) |
| |
|
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 = 4 |
| |
|
C. |
(x - 2)2 + (y + 5)2 = 2 |
D. |
(x + 2)2 + (y - 5)2 = 2 |
| |
|
Hint |
|
| |
3. |
Find an equation of the circle that has a diameter with endpoints at (6, 10) and (-2, 4). |
| |
|
A. |
(x - 2)2 + (y - 7)2 = 25 |
B. |
(x - 4)2 + (y - 3)2 = 53 |
| |
|
C. |
(x - 6)2 + (y - 10)2 = 100 |
D. |
(x + 2)2 + (y - 4)2 = 100 |
| |
|
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. |
Which is an equation of the circle with center at (11, -19) and diameter 12? |
| |
|
A. |
(x - 11) 2 + (y + 19) 2 = 36 |
| |
|
B. |
(x - 11) 2 + (y + 19) 2 = 144 |
| |
|
C. |
(x + 11) 2 + (y - 19) 2.= 144 |
| |
|
D. |
(x + 11) 2 + (y - 19) 2 = 36 |
| |
|
Hint |
|
|
|