Y = 5x

Is it proportional

Yes.

Step-by-step explanation:

y is Directly proportional to the x. The formula for directly proportional is y = kx where k is the constant so for this question it is a proportional.

Another type of proportional is called Inversely proportional where the formula is y = k/x.

Answer: Its proportional, because if we increase y by for example 3, value of x will increase by 3 too.