SOLUTION: Determine whether the relation is a function. x^2=1+y^2

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Question 78017: Determine whether the relation is a function.
x^2=1+y^2

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
In order to determine if this is a function lets solve for y.



Subtract 1 from both sides

Take the square root of both sides
So we have


Now lets graph . This can be broken up as
or

graph of and
Since the graph fails the vertical line test, it is not a function.

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