document.write( "Question 205429: What similarities and differences do you see between functions and linear equations? Are all linear equations functions? Is there an instance in which a linear equation is not a function? Create an equation of a nonlinear functions.
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Algebra.Com's Answer #155079 by solver91311(24713) $\"\"$ $\"About$

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. This is all linear equations except those of the form

that represent vertical lines.\r
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