Question

an elevator moves at a constant rate of 18 feet in 3 seconds a second elevator moves at a rate of 40 feet in 5 seconds

Answer 1

This situation does not represent a proportionality relation because the ratios are different.

This comes from the fact that:

$\frac{18}{3}=6$

and

$\frac{40}{5}=8$

Therefore the ratios are different.