Question

What is the average rate of change of the function f(X)= 2x - 1

Answer 1

Answer:

2

Step-by-step explanation:

The average rate of change of the function f(x) is

$\dfrac{f(b)-f(a)}{b-a}$

1. At $a=1,$

$f(1)=2\cdot 1-1=1$

2. At $b=2,$

$f(2)=2\cdot 2-1$

The average rate of change is

$\dfrac{3-1}{2-1}=\dfrac{2}{1}=2$