Determine Whether or Not the Function Is One-To-One $$f ( x ) = \frac { - 9 x - 5 } { 7 x + 4 }$$

Determine whether or not the function is one-to-one.
- $$f ( x ) = \frac { - 9 x - 5 } { 7 x + 4 }$$

A) No
B) Yes