SOLUTION: Find the equation, in standard form, of the circle. Center (-4,9), targent to the x-axis

Question 1183681: Find the equation, in standard form, of the circle.
Center (-4,9), targent to the x-axis
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
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Find the equation, in standard form, of the circle.
Center (-4,9), TANGENT to the x-axis
~~~~~~~~~~~~~

Since the circle is tangent to x-axis, the radius of the circle is 9 units.


THEREFORE, the standard equation of this circle is


     +  = 9^2,

or

     +  = 81.      ANSWER

Solved, answered and explained.

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