x for milk and y for coffee, the demand function is x= i/2P x +P y /P x . (i for income) how to describe the relationship between demand for milk(x)...

x for milk and y for coffee, the demand function is  x= i/2Px+Py/Px.  (i for income)

how to describe the relationship between demand for milk(x) and ,

1. income

2. price of milk

3. price of coffee

answer must be reference the demand function, and use the CORRECT TERM to describe the relationship