Find the rate of change of the function h (x) = 2 x on the interval 2 ≤ x ≤ 4

For a linear function, the instantaneous rate of change is everywhere equal to the slope. Thus the rate of change of the function h (x) = 2x on the interval 2≤x≤4

The rate of change of the function given will equal to its slope, thus;

slope, m = (y-1-y) / (x_1-x)

= (2*4-2*2) / (4-2)

= (8-4) / 2

=4/2

=2

the answer is 2