10.3 Circles

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10.3 Circles

  1. 3. 10.3 Circles
  2. 4. A circle is. . .
  3. 5. Standard form for the equation of a circle: Circle Demo
  4. 6. Example 1 . Write the equation of the circle. <ul><li>Center (-4, 3), radius 4 </li></ul><ul><li>Center (5, -2), radius 8 </li></ul>
  5. 7. Example 2. Find the center and radius of each circle. <ul><li>(x – 16) 2 + (y + 9) 2 = 144 </li></ul><ul><li>(x + 8) 2 + (y + 3) 2 = 121 </li></ul><ul><li>x 2 + y 2 = 2 </li></ul>
  6. 8. Example 3 . Find the center and radius . <ul><li>a. x 2 + y 2 - 6x – 2y + 4 = 0 </li></ul><ul><li>b. x 2 + y 2 – 14x – 2y = -1 </li></ul>
  7. 10. Assignment:

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