Determine the Average Rate of Change for the Function $$f ( x ) = \frac { 1 } { 2 } x - 3$$

Multiple Choice

Determine the average rate of change for the function.
- $$f ( x ) = \frac { 1 } { 2 } x - 3$$

A) 3
B) $- \frac { 1 } { 2 }$
C) $- 3$
D) $\frac { 1 } { 2 }$