Question

Dada a função f(x) = 2 - 4x, calcule:
a) f(-1) b)f(0) c)f(4) d)f(-3) e)f(-2) f)f(2) g)f(3)

Answer 1

a)f(-1) = 2-4(-1)
    f(-1)= 2+4 = 6

b)f(0) =2 - 4.0
   f(0) =2

c) f(4) = 2-4.4
    f(4)=2-16 =-14

d)f(-3) = 2-4.(-3)
   f(-3) =2+12 =14

e)f(-2) =2-4.-2
   f(-2) = 2+8=10

f)f(2) = 2-4.2
  f(2) =2-8 =-6

g) f(3) = 2-4.3
    f(3) =2-12 =-10