Question

Determine o valor numérico da função afim f(x) =3x+1, para:
a) x=2
b) x= -4
c) f(7)
d) f(0)
e) x= -5

Answer 1

$a)f(2) = 3 \times 2 + 1 = 6 + 1 = 7 \\ \\ b)f( - 4) = 3 \times ( - 4) + 1 = - 12 + 1 = - 11 \\ \\ c)f(7) = 3 \times 7 + 1 = 21 + 1 = 22 \\ \\ d)f(0) = 3 \times 0 + 1 = 0 + 1 = 1 \\ \\ e)f( - 5) = 3 \times ( - 5) + 1 = - 15 + 1 = - 14$