1. 11.7 Circles in the Coordinate Plane
Geometry

2. Theorem

3. Examples:
(x+3)2 + y2 = 12
Center=
Radius=

4. Examples: Write the equation of J with center J (2, 2) and radius 4
Write the equation of P with center P(0, –3) and radius 8

5. Example:
Write the equation of a circle with a center (-11, 12) and a diameter=2
Write the equation of a circle with a center (0, -27) and a radius =

6. Examples:
Write the equation of K that passes through J(6, 4) and has center K(1, –8)
Write the equation of Q that passes through (2, 3) and has center Q(2, –1)

7. Examples:
Graph x2 + y2 = 16
Graph (x – 3)2 + (y + 4)2 = 9

8. Examples:
Graph x2 + y2 = 9
Graph (x – 3)2 + (y + 2)2 = 4