Which equations below represent nonlinear functions? y = 4x + 16

y = x2 − 2

34x − 9 = y

y = 7x

y = −8x

y = x^2 - 2 does not represent a linear function because the squared exponent above the variable makes that equation quadratic. Quadratic equations look like parabolas on a graph, rather than lines.

What are the options