Select each option that represents a proportional relationship between x y

We're having a hard time selecting anything, because
you won't let us see what the options are.

Any option that looks like

       x  =  K y
or
       y  =  K x
or
    A x  =  K y
or
    A y  =  K x
or
    A x  -  K y  =  0
or
    A y  -  K x  =  0
   
is a proportional relationship between 'x' and 'y'.

The 'A' and 'K' can be any number except zero.

Distance=slopeslope is -2/4which equals-1/2the distance between these two points is -1/2

The answer is 225 miles per 4.5 hours. hope this ; )