1. Starter Activity Write the equation of a circle with a center of
(-7, 3) and a radius of 8.
2. Write the equation of a circle with a center of
(-1, -1) that goes through the point (2, -1).
3. Write the equation of the circle pictured.
Starter Activity

2. Solving Systems involving Circles

3. A quick review…

4. Perpendicular Lines

5. Example 1

6. Example 2

7. circle and a line Circle and a circle

8. Step 1: Graph the circle and the line on the SAME coordinate grid.
Step 2: Find the point(s) of intersection.
Step 3: Check the intersection(s) with your calculator.
Circle and a Line

9. Example 1

10. Example 2

11. Step 1: Graph the circle and the line on the SAME coordinate grid.
Step 2: Find the point(s) of intersection.
Step 3: Check the intersection(s) with your calculator.
Circle and a Circle

12. Example 1

13. Example 2

14. Example 3