Is the function linear or nonlinear y=2x^2-4

ANSWER

The function is non linear.

EXPLANATION

A linear function is of the form



or



The highest degree of the variables in each term in the simplest form is 1.

Any degree higher or less than 1 will make the function nonlinear.

The function given to us is,



The highest degree is 2. This is a quadratic curve.

The graph of all linear functions are straight lines.

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