QUESTION IMAGE
Question
the function y = f(x) is graphed below. what is the average rate of change of the function f(x) on the interval -9 ≤ x ≤ -8? answer attempt 1 out of 2
Step1: Identificar la fórmula
La tasa media de cambio de una función $y = f(x)$ en el intervalo $[a,b]$ está dada por $\frac{f(b)-f(a)}{b - a}$. Aquí, $a=-9$ y $b = - 8$.
Step2: Leer valores del gráfico
Observando el gráfico, $f(-9)=- 20$ y $f(-8)=40$.
Step3: Calcular la tasa media de cambio
Sustituimos en la fórmula: $\frac{f(-8)-f(-9)}{-8-(-9)}=\frac{40 - (-20)}{-8 + 9}=\frac{40 + 20}{1}=60$.
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