Math Help - Average rate of change as x move from 1 to 3

1. Average rate of change as x move from 1 to 3

f(x)=3x²+1

Thank you.

2. Originally Posted by beachbunny619
f(x)=3x²+1

Thank you.
The average rate of change is defined as $\frac{f(b)-f(a)}{b-a}$

In your case, you need to evaluate $\frac{f(3)-f(1)}{3-1}$, where $f(x)=3x^2+1$

Can you take it from here?

--Chris

3. Huh???

4. Originally Posted by Chris L T521
The average rate of change is defined as $\frac{f(b)-f(a)}{b-a}$

In your case, you need to evaluate $\frac{f(3)-f(1)}{3-1}$, where $f(x)=3x^2+1$

Can you take it from here?

--Chris
What do I have to do?

5. Originally Posted by beachbunny619
What do I have to do?
Do the arithmetic!!