1. http://www.youtube.com/watch?v=OJKaNO7DD90

2. Standard Equation of a Circle w/center at the origin. x 2 + y 2 = r 2 r is the radius Translation of circles: (x – h) 2 + (y – k) 2 = r 2 (h, k) = Center of the circle r = radius x - shifty - shift GOLDEN RULE

8. 1. Write an equation: Center (2, -3) and radius is 5.

9. 1. Find the center of the circle and what is the radius. (x + 5) 2 + (y – 2) 2 = 64

10. 1. Write the equation for the given picture: A. Find center: B. Identify radius: C. Plug in equation:

11. Example: Graph the Circle (x + 2) 2 + (y – 3) 2 = 16 1. Center 2. Radius in all directions 3. Connect Points

14.  Pg 575 15-21 and 24-29