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Please, please help!

Which of the following equations would not be a line when graphed? Explain how you can tell by just looking at the equations.

y = 3x+4
y= 2/x
y= -5x
y= 6x^2 -7

User Monk
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General \: line \: equation: y=mx+b \\ \Rightarrow y = (2)/(x) \: and \: y = 6{ x }^(2) - 7 \: won 't \: be \: lines \: when \: graphed

User Zawisza
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