what is 16x^2-9y^2-64x-18y-89=0
NOT SURE, but if you simplify it and do some 'completing of the squares', you will get
16(x-2)^2 - 9(y-1)^2 = 145
A graphing calculator will show this to be a hyperbola with axes of symmetry x = 2 y = 1
+37170 
