SOLUTION: How do I determine if abs (y)=4-x is a function?

SOLUTION: How do I determine if abs (y)=4-x is a function?

Algebra.Com

Question 1053520: How do I determine if abs (y)=4-x is a function?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
You can graph it.
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It fails the vertical line test so it is not a function.

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