Respuesta :

[tex]f(x)= \frac{12}{4x+2 } [/tex]

[tex]For f(-1) =\ \textgreater \ x =\ \textgreater \ -1[/tex]

[tex]f(-1) = \frac{12}{4.(-1) + 2} [/tex]

[tex]f(-1) = \frac{12}{(-4) + 2} = \frac{12}{-2} = -6[/tex]

[tex]f(-1) = -6[/tex]
ioana123
f(-1)
it's easy. instead of x we will put -1 and we will calculate the value 
SO
f(-1)=12/4*(-1)+2
f(-1)=12/-4+2
f(-1)=12/-2
f(-1)=-6