1.
Find the coordinates of the center of a circle with equation
x
2
+
y
2
- 2
x
+ 8
y
+ 13 = 0.
A.
(1, 4)
B.
(-1, 4)
C.
(-1, -4)
D.
(1, -4)
Hint
2.
What is an equation for a circle with a center at (3, -1) that is tangent to the line
x
= 7?
A.
B.
C.
D.
Hint
3.
What is equidistant to all of the points on a circle?
A.
tangent line
B.
radius
C.
center
D.
diameter
Hint
4.
Write the equation
in standard form.
A.
B.
C.
D.
Hint
5.
Which of the following could be the center of a circle that is tangent to the lines
y
= 3 and
x
= –2?
A.
(2, 1)
B.
(-3, 1)
C.
(0, 0)
D.
(2, -1)
Hint