finding the average change of a function given graph!!!! help please

The average rate of change of function f(x) is2.
We need to find the average value of a function and the average rate of change of function.
A function in mathematics is a relation involving two variables, such that one variable is dependent on the other for its value.
According to the question -
To Finding the Average Rate of Change of a function.
Thus The average rate of change of function f(x) is found out as follows -
[tex]f(x) = \dfrac{f(b) - f(a)}{b-a}[/tex]
Change in x =7 -(-1) = 8
Change in y = 4-0 = 4
Hence
average Rate of Change = 8/4
= 2
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