Is $x^2=y+1$ a function?

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Answer 1 · 2016-03-12T18:19:31

The formal Definition of a Function is

"A function relates each element of a set with exactly one element of another set"

Hence for $y=x^2-1$ it is a function.

Answer 2 · 2016-03-31T10:02:48

In support of Constantinos contribution: Pick any 1 value for $x$ . If that 1 value of $x$ relates to only 1 value of $y$ then it is a function.

Is x^2=y+1x^2=y+1 a function?