Find the Average Rate of Change of the Function Over $y = \sqrt { 2 x } , [ 2,8 ]$

Multiple Choice

Find the average rate of change of the function over the given interval.
- $y = \sqrt { 2 x } , [ 2,8 ]$

A) 7
B) $\frac { 1 } { 3 }$
C) $- \frac { 3 } { 10 }$
D) 2