Find the Inverse of the One-To-One Function $f ( x ) = \frac { 5 x - 1 } { 4 }$

Multiple Choice

Find the inverse of the one-to-one function.
- $f ( x ) = \frac { 5 x - 1 } { 4 }$

A) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 4 \mathrm { x } - 1 } { 5 }$
B) $f ^ { - 1 } ( x ) = \frac { 4 } { 5 x - 1 }$
C) $f ^ { - 1 } ( x ) = \frac { 4 x + 1 } { 5 }$
D) $\mathrm { f } ^ { - 1 } ( \mathrm { x } ) = \frac { 4 } { 5 \mathrm { x } + 1 }$