Question

Tell whether x and why are in a proportional relationship explain your reasoning

Answer 1

In order to check proportionality, we need to check it's divisibility for two instances, 
First = 35 - 30 /1 = 5/1 = 5
second = 30 - 25 / 2-1 = 5/1 = 5

As, slope (m), is constant for every step, the relation is proportional

Hope this helps!