Algebra II : Graphing Circle Functions

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Example Question #471 : Functions And Graphs

Which equation does this graph represent?

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Possible Answers:

Correct answer:

Explanation:

The equation of a circle is , in which (h, k) is the center of the circle and r is its radius. Because the graph of the circle is centered at (2, -3), h and k are -2 and 3. Because the radius is 4, the right side of the equation is equal to 16.

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