Find the Vertex Form x^2+y^2=25
Problem
Solution
Identify the type of equation. This is the standard form of a circle centered at the origin
(h,k)=(0,0) with radiusr Recall the standard vertex (center-radius) form for a circle, which is
(x−h)2+(y−k)2=r2 Rewrite the terms
x2 andy2 to explicitly show the coordinates of the center.Substitute
x2 with(x−0)2 andy2 with(y−0)2 Determine the radius by identifying
r2=25 which meansr=5
Final Answer
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