1. Circles

2. Parts of a Circle
center
radius

4. From this form, we can tell the center and radius
𝑥−4 2 + 𝑦+1 2 =25 𝑥 2 + 𝑦−2 2 =12

5. Write the equation of each circle.
J with center J (-3, 2) and radius 4
K with center K (0, 0) and radius 𝟑
L with center L (9, 1) and radius 𝟐 𝟕

6. Graphing Circles Step 1- Rewrite equation in standard form
Step 2- Identify the center and radius
Step 3- Plot the center and then 4 more points (use the radius and count up, down, left, and right from center)

7. Graph the circles
𝑦 2 −9=− 𝑥 2

8. How do you graph translated circles?

9. How can we write the equation from a graph?
Center
Radius
Equation

10. Homework:
Worksheet!