Find the Average Rate of Change of the Function Over $$y= - 3 x ^ { 2 } - x , [ 5,6 ]$$

Multiple Choice

Find the average rate of change of the function over the given interval.
- $$y= - 3 x ^ { 2 } - x , [ 5,6 ]$$

A) $\frac { 1 } { 2 }$
B) $- 34$
C) $- 2$
D) $- \frac { 1 } { 6 }$