Explain why the following equation is nonlinear. Y=2x*3

Question

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Answer 1

if you mean y=2x^3 then it's a cubic equation, a 3rd degree equation. Linear requires no power greater than 1

3>1

sometimes * is used to mean multiplication. IF you meant y=2x(3) then y=6x is a linear equation, with both y and x with implicit powers of 1.