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The graph shows the value of a car at different years after Joanna purchased it.Which answer is the best estimate for the average rate of change between year 9 and year 14?

The graph shows the value of a car at different years after Joanna purchased itWhich answer is the best estimate for the average rate of change between year 9 a class=

Respuesta :

The average rate of change can be found through the formula

[tex]average=\frac{f(b)-f(a)}{b-a}[/tex]

then, looking at the graph, the points that are needed are (14,750) and (9,1400).

Using the formula,

[tex]\begin{gathered} average=\frac{1400-750}{9-14} \\ average=\frac{650}{-5} \\ average=-\text{\$}\frac{130}{\text{year}} \end{gathered}[/tex]

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