There is not enough information to answer this problem.
Step-by-step explanation:
A proportional function means that if you change X, Y will change in the same proportion. And that proportion of change will remain the same no matter which two values of X you take to compare them.
But that proportion will vary from function to function.
Without knowing what the function is, it's impossible to know the value of Y for a given X... it could be anything.
