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Yes. Any linear equation of the form x = c (meaning that the coefficient of y is zero and that the graphed line is vertical) is not a function, as all points are verticaly above or below every other point. This is by definition a nonfunction.

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y=0.5x-1

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anahis sosa

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5y ago
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Linear

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Anonymous

5y ago
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Q: What linear equations are not functions?
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