/Which of the following gives an example of a function that is not linear?(1 point)Responsesy=x2−3x+2.25y equals x squared minus 3 x plus 2.25y=16x+23y equals Start Fraction 1 over 6 End Fraction x plus Start Fraction 2 over 3 End Fraction2x+3y=162 x plus 3 y equals 169x+3y−18=0

The function y=x^2−3x+2.25 is not linear because it contains a quadratic term (x^2).