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Question 310249:  Find the equation of a circle that is tangent the line x = -8 and is tangent to both coordinate axis. 
 Answer by stanbon(75887)      (Show Source): 
You can  put this solution on YOUR website! Find the equation of a circle that is tangent the line x = -8 and is tangent to both coordinate axis. 
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Draw the circle in a coordinate system. 
The circle is tangent to x = -8 and to x = 0 
The diameter = 8 so the center is at (-4,4) 
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Equation: 
(x+4)^2 + (y-4)^2 = 4^2 
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cheers, 
Stan H. 
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