EXPLANATION
Rate of change from x=0 to x=2 wil be given by formula:
Δchange = change in output / change in input = Δy/ Δx
= (y2-y1)/(x2-x1)
= (f(x2) - f(x1)) / (x2-x1)
Rate of change = (8-1)/(2-0)= 7/2 = 3.5
Answer: Approximately rate of change will be 3.5.