it goes this way in the problem which makes me confused:
Determine if the set is a function. State the domain if it is a function.
1.) {(x,y) | x= y^2}
2.) {(x,y) | x= y^3}
#1 is not a function which is found in the answer at the back of the book while #2 is a function with domain (-infinity,+infinity)
im not asking help from a homework, im doing a bit of self-study and i found this part confusing. thank you, everyone, for your input :)