To evaluate the function 12x -3y when x = -1/4 and y = 3, we need to substitute each of the values into the function, do the necessary operations to have the final result. Therefore, we can proceed as follows:
[tex]12x-3y\Rightarrow12\cdot(-\frac{1}{4})-3\cdot(3)=-\frac{12}{4}-9=-3-9=-12[/tex]Thus, the value for the given expression is -12 when x = -1/4 and y = 3.
