Resposta :
[tex]a) \\ \boxed{\boxed{\boxed{y = 6 + 3x}}} \\ [/tex]
[tex]b) \\ y = 6 + 3 \: . \: 3,5 \\ y = 6 + 10,5 \\ \boxed{\boxed{\boxed{y = 16,5}}} \\ [/tex]
atte. yrz
[tex]a) \\ \boxed{\boxed{\boxed{y = 6 + 3x}}} \\ [/tex]
[tex]b) \\ y = 6 + 3 \: . \: 3,5 \\ y = 6 + 10,5 \\ \boxed{\boxed{\boxed{y = 16,5}}} \\ [/tex]
atte. yrz