For the quadratic function below, what is the rate of change over the interval.
3 ≤ x ≤ 5

2

Step-by-step explanation:

The rate of change of f(x) in the closed interval [ a, b ] is

here [ a, b ] = [ 3, 5 }

and from the graph

f(b) = f(5 ) = 3 and f(a) = f(3) = - 1, hence

rate of change = = = 2