Confused on this problem because I am getting two functions?
Which of the following represents a function?
x=[y] (straight, linear line)
x^2+y^2=49 (this is a circle, so no.)
y=|x| (makes a 'v')
x=y^2(parabola, so no.)
Now, if it means one-to-one, which it doesn't specify, it would be x=[y], which is what I picked. But I don't know since y=|x| is in the shape of a 'v'

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yes, the second is a cirgcle

lol circle

\[x=|y|\] looks like |dw:1449716799576:dw|this

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