Find the vertices of the hyperbola defined by the equation start fraction, left bracket, y, plus, 6, right bracket, squared, divided by, 9, end fraction, minus, start fraction, left bracket, x, plus, 2, right bracket, squared, divided by, 64, end fraction, equals, 1 9 (y 6) 2 ​ − 64 (x 2) 2 ​ =1. If necessary, round to the nearest tenth.