What is proportional and non-proportional relationships?

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]