Find the Inverse of the One-To-One Function $f ^ { - 1 } ( x ) = \frac { x + 9 } { 5 }$

Multiple Choice

Find the inverse of the one-to-one function.

Y = 5x + 9

A) $f ^ { - 1 } ( x ) = \frac { x + 9 } { 5 }$
B) $f ^ { - 1 } ( x ) = \frac { x - 9 } { 5 }$
C) $f ^ { - 1 } ( x ) = \frac { 5 } { x - 9 }$
D) $f ^ { - 1 } ( x ) = \frac { x - 5 } { 9 }$
E) none of the above