Question 112939
{{{f(x)=-3x+12}}} Start with the given function



{{{f(1/3)=-3(1/3)+12}}} Plug in {{{x=1/3}}}



{{{f(1/3)=-3/3+12}}} Multiply



{{{f(1/3)=-1+12}}} Reduce



{{{f(1/3)=11}}} Add