Conic Sections – The Circle

NOTE: If the equation of a circle is written in standard form, its center and radius can easily be read. 3. Sketch the graph of (x +8)2 + (y – 2)2 = 36 . Compare to (x – h)2 + (y – k)2 = r2. Remember, if an equation is written in general form, we can’t read the center and radius from it. Example: Find the center and radius of x2 + y2 ... ................
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