Question 213938
At x=4, y=1/(4-2)=1/2
At x=8, y=1/(8-2)=1/6
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The ave. rate of change is the slope of the line passing through (4,1/2) and (8,1/6)
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{{{m=((1/6)-(1/2))/(8-4)=((-1/3)/4)}}}=<u>-1/12</u>