ANSWER
[tex]-4[/tex]
EXPLANATION
From Intervals x=-6 to x=-5
From the given graph;
[tex]\begin{gathered} f(-6)=8 \\ f(-5)=4 \end{gathered}[/tex]
The average rate of change;
[tex]\begin{gathered} \frac{f(-6)-f(-5)}{-6-(-5)} \\ =\frac{8-4}{-1} \\ =\frac{4}{-1} \\ =-4 \end{gathered}[/tex]
