Answer :

y=2x³-3 
Any equation where the x is squared or cubed would make a curve on a graph. :)
[tex]The\ linear\ function\ represent\ an\ equations:\\\\y=mx+b;\ Ax+By=C;\ Ax+Bx+C=0[/tex]

[tex]therefore:\\A)\ y=2x^3-3\to\boxed{NO}\\\\B)\ y=\frac{4}{3}x\to\boxed{YES}\to y=mx+b\\\\C)\ y=\frac{x}{4}=\frac{1}{4}x\to\boxed{YES}\to y=mx+b[/tex]

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