Question 254669
Given,
      g(x) = 9/(10-9x)
We can assign any value to x such that the denominator is not zero
  If the denominator is zero,   10-9x = 0
                                  -9x = -10
                                    x = -10/(-9)
                                    x = 10/9
Therefore we can assign any value to x other than 10/9
The domain is all real values other than 10/9