Precalc0011to0016-page19

Precalc0011to0016-pa - (Section 0.13 The Cartesian Plane and Circles 0.13.4 Example 1(The Graph of an Equation A Circle Centered at the Origin The

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(Section 0.13: The Cartesian Plane and Circles) 0.13.4 Example 1 (The Graph of an Equation; A Circle Centered at the Origin) The graph of x 2 + y 2 = 9 is the circle below with center 0, 0 () and radius 3. The ordered pairs 3, 0 , ± , 0, 3 , and 0, ± 3 are all solutions of the equation x 2 + y 2 = 9 , and their corresponding points lie on the circle. Other points such as 7 ,2 also lie on the circle. § Equation of a Circle with Center
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This document was uploaded on 12/29/2011.

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