Exercises: Linear functions, zeros, axis intercepts

There are several solutions to this problem. We are looking for two different linear functions that both pass through the point $(4|0)$.

A very simple example would be $f(x)=0$, i.e. the $x$-axis and $g(x)=x-4$.

$f(x)$ obviously runs through $(4|0)$. For $g(x)$ this can also be checked very easily: $g(4)=4-4=0$.

Other possible functions are:

$y=-x+4$ , $y=2x-8$ (generally $y=ax-4a$ for any $a$).