Question 1039220:  Find the equation of the circle which touches the X axis at a point (3,0) and passing through point (1,2). 
 Answer by josgarithmetic(39630)      (Show Source): 
You can  put this solution on YOUR website! The center of the circle is on the vertical line, x=3, which is a point,  (3,y).  The distance from  (3,y) to (3,0) is equal to the distance from (3,y) to (1,2).  Use the Distance Formula and go from there. 
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