Answer:
3
Step-by-step explanation:
I think you misses attaching the photo, so please have a look at my photo for your better understanding.
We know the formula for rate of change of the parabola line:
[tex]\frac{f(b)- f(a)}{b-a}[/tex]
Given here:
a= 2 => f(a) = 2
b=6 => f(b) = 2
Substitute all the values into the function, we have:
[tex]\frac{14-2}{6-2} = 3[/tex]
So the rate of change is 3
