Question

Find the center and radius of the circle $x^2 + (y - 3)^2 = 64$. 

          Find the center and radius of the circle $x^2 + (y - 3)^2 = 64$.
Find the center and radius of the circle x^2 + (y - 3)^2 = 64.

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Elementary and Intermediate Algebra
Elementary and Intermediate Algebra
Alan S. Tussy, R. David Gustafson 5th Edition
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Find the center and radius of the circle x² + (y - 3)² = 64. Find the center and radius of the circle x + y - 3 = 64.
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Transcript

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00:02 Okay, here we have the equation of a circle, and i'm going to rewrite it as x minus zero quantity squared plus y minus zero quantity squared equals 8 squared, so that we can see that the center, hk, is the point 0 ,0, and we can see that the radius r is 8.
00:29 Okay, we're also going to sketch a graph, and so we want to sketch a graph of a circle with a center 0 ,0, and radius 8.
00:47 So what we do is we start by plotting the center.
00:51 And then from the center, we go up eight units and down eight units, right eight units, and left eight units...
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