Respuesta :

9514 1404 393

Answer:

  5/9

Step-by-step explanation:

Compare the given equation ...

  y = (5/9)x

to the equation for proportionality ...

  y = rx

where r is the constant of proportionality.

Matching the two patterns, you should be able to see that r = 5/9.

The constant of proportionality is 5/9.