Question 320525
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I can think of an infinity of them.  Any equation of the form *[tex \LARGE x\ =\ \alpha] where *[tex \LARGE \alpha\ \in\ \mathbb{R}] is a vertical line where all of the points comprising the line have the *[tex \LARGE x]-coordinate equal to *[tex \LARGE \alpha] and the set of *[tex \LARGE y]-coordinates has a one-to-one correspondence with *[tex \LARGE \mathbb{R}], the set of real numbers.


If you want a specific linear equation that is not a function, just pick any number that tickles your fancy and substitute it for *[tex \LARGE \alpha] in *[tex \LARGE x\ =\ \alpha]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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