The standard form of the equation of an ellipse centered at (h, k) with major and minor axes of lengths 2a and 2b (Where 0 < b < a) is

or .

The ellipse centered (h, k) = (9, 1).

The substitute h = 9, k = 1 values on above equation.

or

To find out the final equation, we need to any information for a, b.