Question 110834

{{{f(x)=-x-4}}} Start with the given function


{{{f(a+1)=-(a+1)-4}}}  Plug in {{{a+1}}}



{{{f(a+1)=-a-1-4}}}  Distribute the negative


{{{f(a+1)=-a-5}}} Simplify



So {{{f(a+1)=-a-5}}}