Question 1183681
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Find the equation, in standard form, of the circle.
Center (-4,9), {{{highlight(cross(targent))}}} <U>TANGENT</U> to the x-axis
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<pre>
Since the circle is tangent to x-axis, the radius of the circle is 9 units.


THEREFORE, the standard equation of this circle is


    {{{(x-(-4))^2}}} + {{{(y-9)^2}}} = 9^2,

or

    {{{(x+4)^2}}} + {{{(y-9)^2}}} = 81.      <U>ANSWER</U>
</pre>

Solved, answered and explained.