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Algebra II Recipe: Writing an Equation of a Circle (When the Center and Radius are Given.)
Writing an equation
  1. Use .
  2. Substitute the values of the center in place of h and k.
  3. Substitute the value of the radius for r.
  4. Square both sides to eliminate the .
ExamplesExamples:
Write the equation of the circle with center (-2,3) and radius equals 4.
Write the equation of the circle with center (0,0) and radius equals



G Redden

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