Respuesta :

[tex]\begin{gathered} f(x)\text{ = x} \\ f(x+2)\text{ = x+2} \\ e\mathrm{}g,\text{ when x = 1 then y?} \\ y\text{ = x +2} \\ y\text{ = 1 + 2= 3} \\ \text{Graph 4, gives the best figure.} \end{gathered}[/tex]