Answer:
[tex]y = 150x[/tex] is a proportional relationship.
Step-by-step explanation:
We are given the following equations in the question:
[tex]y = 7x - 3\\y = 150 x[/tex]
A proportional relationship is of the form:
[tex]y = kx[/tex]
where k is a constant.
a)
[tex]y = 7x-3[/tex]
It is not a proportional relationship as it does not take the form y = kx.
b)
[tex]y = 150x[/tex]
It is a proportional relationship.
Comparing the equations, we get k = 150.