Question

What is the average rate of change between:

x = 1 and x = 2?

x = 2 and x = 3?

x = 3 and x = 4?

Answer 1

The question seems incomplete, what are the y-values?

Answer 2

For average rate of change between two x values x = a and x = b the formula is

[ f(b) - f(a) ] / (b - a)

Determine the value of your function at the two x values and plug them into the formula

Other than that, yeah we can’t do much without knowing the actual function