If y is
- if y is directly proportional to x^2
- if y is a function of x then
- if y is the reciprocal of x
- if y is directly proportional to 1/x
- if y is 0 is it undefined
- if y is a negative number such that
- if y is squared is it a function
- if y is inversely proportional to x
- if y is directly proportional to x
- if y is a function of x and ln(x+y)u003d2xy then yu2032(0)u003d
