I have a question, and would appreciate help in answering it. Thank you.

"show that y^2 - xy - 2 = 0 cannot be a function ƒ(x) for x ∈ R."

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- Nov 27th 2013, 07:57 AMeliTfunction help?
I have a question, and would appreciate help in answering it. Thank you.

"show that y^2 - xy - 2 = 0 cannot be a function ƒ(x) for x ∈ R." - Nov 27th 2013, 09:24 AMPlatoRe: function help?
- Nov 27th 2013, 10:19 AMeliTRe: function help?
I am so sorry, but I don't know what any of that is. I've spent hours trying to understand. I've done tons of questions (correctly) but I just don't know what to

__write__as the answer to__this__question. I was seriously hoping someone could tell me what equation or statement actually answers the question that was asked. But so far on three different forums the only replies I get are people asking me questions, giving vague hints I don't understand or telling me to research functions. I'm fairly close to tears now... so tired of trying and only failing to understand. - Nov 27th 2013, 10:41 AMPlatoRe: function help?