Which of the following gives an example of a function that is not linear? (1 point)
y = 1/6 * x + 2/3
O 2x + 3y = 16
O 9x + 3y - 18 = 0
y = x ^ 2 - 3x + 2.25
The function that is not linear among the provided options is:
y = x ^ 2 - 3x + 2.25
This function is a quadratic function because of the x^2 term, which is a second-degree term. Linear functions only have variables to the first power.