Determine Whether the Function Is One-To-One $\mathrm { f } = \{ ( 0,0 ) , ( 1,1 ) , ( - 2,8 ) \}$

Determine whether the function is one-to-one. If it is one-to-one find an equation or a set of ordered pairs that defines
the inverse function of the given function.
- $\mathrm { f } = \{ ( 0,0 ) , ( 1,1 ) , ( - 2,8 ) \}$

A) one-to-one; $\mathrm { f } ^ { - 1 } = \{ ( 0,0 ) , ( 1,1 ) , ( 8 , - 2 ) \}$
B) not one-to-one
C) one-to-one; $\mathrm { f } ^ { - 1 } = \{ ( 0,0 ) , ( 1 , - 2 ) , ( 8,1 ) \}$
D) one-to-one; $\mathrm { f } ^ { - 1 } = \left\{ ( 0,0 ) , \left( 1 , \frac { 1 } { 1 } \right) , \left( - 2 , \frac { 1 } { 8 } \right) \right\}$