which of the following gives an example of a function that is not linear y=xsqr-3x+2.25 y=1/6x+2/3 9x+3y-18=0 2x+3y=16

y=xsqr - 3x + 2.25

wrong

y=xsqr-3x+2.25 is a quadratic function, not a linear function.