Determine Whether the Given Function Is One-To-One $$f ( x ) = \frac { 3 x + 8 } { - 6 x - 2 }$$

Determine whether the given function is one-to-one. If so, find a formula for the inverse.
- $$f ( x ) = \frac { 3 x + 8 } { - 6 x - 2 }$$

A) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 3 \mathrm { x } + 8 } { - 6 \mathrm { x } - 2 }$
B) $f ^ { - 1 } ( x ) = \frac { 2 x + 8 } { - 6 x - 3 }$
C) Not a one-to-one function
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { - 6 \mathrm { x } - 3 } { 2 \mathrm { x } + 8 }$