Question

Dada a lei da função f(x) = 3x-1, obter:
(A) f(-1)
(B) f(2)
(C) f(-3)

Answer 1

f(x) = 3x-1
f(-1) = 3×(-1)-1 = -3-1 = -4
f(2) = 3×2-1 = 6-1 = 5
f(-3) = 3×(-3)-1 = -9-1 = -10

Answer 2

f (x) = 3x-1

f (-1) = 3 (-1)-1 -3-1 -4
f (2) = 3.2 (-1) 6-1 5
f (-3) = 3 (-3)-1 -9-1 -10