Question

3) Considere a função de 1º grau f(x) = 1 – 5x, calcule:
a) f(0):
b) f(-1):
c) f(3):
d) f(1/5):
e) f(-1/5):

Answer 1

Resposta:

a) F(0) = 1-5•0

F(0) = 1-0

F(0) = 1

b) F(-1) = 1-5•(-1)

F(-1) = 1-(-5)

F(-1) = 1+5

F(-1) = 6

c) F(3) = 1-5•3

F(3) = 1-15

F(3) = -14

d) F(1/5) = 1-5•1/5

F(1/5) = 1-1

F(1/5) = 0

e) F(-1/5) = 1-5•(-1/5)

F(-1/5) = 1+1

F(-1/5) = 2