document.write( "Question 530093: is x=-2 a function? \n" ); document.write( "
Algebra.Com's Answer #349876 by jim_thompson5910(35256)\"\" \"About 
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No, it's not a function because the graph violates the vertical line test.\r
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\n" ); document.write( "\n" ); document.write( "Also, the one input x = -2 maps to more than one output. So it cannot be a function.
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