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I need help with this question!!

I need help with this question!!-example-1
User G Shah
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1 Answer

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This is not a function. The input x = 4 leads to infinitely many outputs. In order to have a function, any given input must have exactly one output (assuming the input is defined in the domain). Visually this graph fails the vertical line test.
User Yevgeniy Gendelman
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