1.
What is the polynomial function of least degree with integral coefficients that has zeros 2 and 3
i
?
A.
y
=
x
2
+
x
- 6
B.
y
=
x
3
- 2
x
2
- 9
x
+ 18
C.
y
=
x
2
- 5
x
- 6
D.
y
=
x
3
- 2
x
2
+ 9
x
- 18
Hint
2.
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
3.
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
4.
Find the diameter of the circle with equation (
x
+ 8)
2
+ (
y
- 9)
2
= 121.
A.
11
B.
121
C.
17
D.
22
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
= 36
C.
(
x
+ 11)
2
+ (
y
- 19)
2
.= 144
D.
(
x
- 11)
2
+ (
y
+ 19)
2
= 144
Hint