[tex]\huge\text{Hey there!}[/tex]
[tex]\rm{f(x) = \dfrac{1}{2}x + 4}\\\\\\\rm{f(x)= \dfrac{1}{2}(8) + 4}\\\\\\\rm{y = \dfrac{1}{2}(8) + 4}\\\\\\\rm{\dfrac{1}{2}(8)\rightarrow \dfrac{1}{2}\times8=\boxed{\bf 4}}\\\\\\\rm{y = \bold{4} + 4}\\\\\\\rm{y = \boxed{\bf 8}}\\\\\\\\\huge\boxed{\rm{Therefore, your\ answer\ is: y = \bf 8}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]