Algebra II: Graphing the equation of a circle
This is a free lesson from our course in Algebra II 
 
   
This lesson covers important basics of a circle like radius, center etc. Further you'll learn how to identify the key elements and graph the circles. You will find some examples with solution, and the instructor explains all that with the help of audio, video presentation and in own hand writing. A circle is the set of all points equidistant from a given point and this point is called the center. The distance from the center to a point on the circle is called the radius. When the center of the circle is at origin (0, 0), and the radius is r, its equation is x2 + y2 = r2 and equation of circle with center at point (h , k) is
         (x - h)2 + (y - k)2 = r2.  
For example, equation of circle with center (3 , 3) and radius 2 is
         (x - 3)2 + (y - 3) 2 = 4.
<h2> Graphing the equation of a circle</h2> <p> video, AlgebraII, practice questions, quizzes, subject, math help, conic sections, basics of circle, graph the circles, radius, center, origin, example, standard form.</p> <p> A circle is the set of all points equidistant from a given point and this point is called the center. The distance from the center to a point on the circle is called the radius.</p>
Other useful lessons:
Completing the square
Graphing the equation of a parabola
Graphing the equation of a hyperbola
Calculating the asymptotes
Conic sections and special points
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