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Are These Functions or Not? And What is Their Domain and Range? (Answer Quick, This is Timed)

Are These Functions or Not? And What is Their Domain and Range? (Answer Quick, This-example-1

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1 is a function, it passes the vertical line test and has one input one output.

11 is NOT a function, it does NOT pass the vertical line test, there are multiple outputs per each inputs so it is NOT a function
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