Caso esteja pelo app, e tenha problemas para visualizar esta resposta, experimente abrir pelo navegador https://brainly.com.br/tarefa/40396402
[tex]\boxed{\begin{array}{l}\sf neste~exerc\acute icio~vou~considerar~x=0,x=1~e~x=2\\\sf para~construc_{\!\!,}\tilde ao~do~gr\acute afico.\\\tt a)~\sf para~x=0\implies y=0\\\sf para~x=1\implies y=1\\\sf para~x=2\implies 2\\\tt b)~\sf para~x=0\implies y=2\cdot0=0\\\sf para~x=1\implies y=2\cdot1=2\\\sf para~x=2\implies y=2\cdot2=4\end{array}}[/tex]
[tex]\boxed{\begin{array}{l}\tt c)~\sf para~x=0\implies y=0\\\sf para~x=1\implies y=-1\\\sf para~x=2\implies y=-2\\\sf o~gr\acute afico~das~3~func_{\!\!,}\tilde oes\\\sf est\acute a~anexo.\end{array}}[/tex]
[tex]\boxed{\begin{array}{l}\frak {legenda}:\\\rm gr\acute afico~lil\acute as\longrightarrow y=x\\\rm gr\acute afico~verde\longrightarrow y=2x\\\rm gr\acut afico~vermelho\longrightarrow y=-x\end{array}}[/tex]
