Use Composition to Verify Whether or Not the Inverse Is $$f ( x ) = - \frac { 1 } { 8 } x , f ^ { - 1 } ( x ) = - 8 x$$

True/False

Use composition to verify whether or not the inverse is correct.
- $$f ( x ) = - \frac { 1 } { 8 } x , f ^ { - 1 } ( x ) = - 8 x$$