Question

A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 3, negative 2, negative 3, 0, 7.
What is the rate of change for the interval between 0 and 2 for the quadratic equation as f(x) = 2x2 + x – 3 represented in the table?

one-fifth
4
5
10

Answer 1

Rate of change = [f(2) − f(0)] / (2 − 0) = (7 − (−3)) / 2 = 10/2 = 5.