The length of the transverse axis of the hyperbola 9x2−16y2−18x−32y−151=0 is
8
4
6
2
Given hyperbola is (x−1)216−(y+1)29=1
Length of the transverse axis is 2a=8.
The distance between the foci of the hyperbola 9x2−16y2+18x+32y−151 = 0 is