Question 250942
I assume you meant
{{{(x-4)^2/25 - (y-9)^2/9=1}}}
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{{{drawing( 300, 300, -2, 14, -2, 14,grid( 1 ),circle( 4, 9, .2 ),graph( 300, 300, -2, 14, -2, 14, 9+sqrt((9(x-4)^2+225)/25),
9-sqrt((9(x-4)^2+225)/25)
)) }}}
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The center is (4,9).