The functions f(x), g(x), and h(x) are shown below. Select the option that represents the ordering of the functions according to their average rates of change on the interval −3≤x≤−2 goes from least to greatest.

The functions fx gx and hx are shown below Select the option that represents the ordering of the functions according to their average rates of change on the int class=
The functions fx gx and hx are shown below Select the option that represents the ordering of the functions according to their average rates of change on the int class=

Respuesta :

The average rate of change of a function f in an interval (a,b) is given by:

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

From the graph on function f we notice that f(-3)=-5 and f(-2)=-10, then forf we have:

[tex]\begin{gathered} m_f=\frac{f(-2)-f(-3)}{-2-(-3)} \\ m_f=\frac{-10-(-5)}{3-2} \\ m_f=\frac{-10+5}{1} \\ m_f=-5 \end{gathered}[/tex]

Fro the table defining dfunction g we have that g(-3)=19 and g(-2)=12, then we have:

[tex]\begin{gathered} m_g=\frac{g(-2)-g(-3)}{-2-(-3)} \\ m_g=\frac{12-19}{1} \\ m_g=-7 \end{gathered}[/tex]

Finally, for function h we have:

[tex]\begin{gathered} m_h=\frac{g(-2)-g(-3)}{-2-(-3)} \\ m_h=\frac{\lbrack-(-2)^2+(-2)+2\rbrack-\lbrack-(-3)^2+(-3)+2\rbrack}{-2-(-3)} \\ m_h=\frac{(-4-2+2)-(-9-3+2)}{1} \\ m_h=\frac{(-4)-(-10)}{1} \\ m_h=\frac{-4+10}{1} \\ m_h=6 \end{gathered}[/tex]

Now, that we have all the average rate of change we notice that:

[tex]m_gTherefore, the order we have is g(x), f(x), h(x)