Question

sendo f(x)=6.x-2, calcule f(-1), f(0), f(5)

Answer 1

$f(x)=6x-2\\ \\ f(-1)=6.(-1)-2=-6-2=-8\\ \\ f(0)=6.0-2=0-2=-2\\ \\ f(5)=6.5-2=30-2=28$

Answer 2

f(x) = 6x - 2

f(x) = 6(-1) - 2
         -6 - 2
           - 8

f(x) = 6. 0 - 2
         0 - 2
           -2

f(x) = 6.5 - 2
         30 - 2
           28