The solution to linear equality is an interval denoted with [tex]k\in I[/tex].
Lets start solving.
We have
[tex]4k+k > k + 16[/tex]
Simplify the inequality
[tex]4k > 16\Longrightarrow k > 4[/tex]
If [tex]k > 4[/tex] then [tex]I=(4,\infty)[/tex] or simply [tex]k\in(4,\infty)[/tex].
Hope this helps.
