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The linear equation x=5 or any other number is a vertical line. There are more than one possible answer for y. Therefore it is not a function.

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Q: When a linear equation can not be a function?
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Related questions

Is a linear equation the same as a function?

No a linear equation are not the same as a linear function. The linear function is written as Ax+By=C. The linear equation is f{x}=m+b.


Is linear function the same as linear equations?

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