Question

3- Dada à função do 1º grau f(x) = 8 - 4x. Determinar:
a) f(0) = _____________________________________________________________
b) f(-1) =_____________________________________________________________
4- Dada à função do 1º grau f(x) = 1+ 5x. Determinar:
a) f(0) = _____________________________________________________________
b) f(-2) =_____________________________________________________________

Answer 1

f(x) = 8 - 4x.

→ a) f(0) = 8

f(0) = 8 - 4.0

f(0) = 8 - 0

f(0) = 8

→ b) f(-1) = 12

f(-1) = 8 - 4.(-1)

f(-1) = 8 + 4

f(-1) = 12

f(x) = 1+ 5x.

→ a) f(0) = 1

f(0) = 1+ 5.0

f(0) = 1+ 0

f(x) = 1

→ b) f(-2) = -9

f(-2) = 1+ 5.(-2)

f(-2) = 1+(-10)

f(-2) = 1 - 10

f(x) = -9

Bons estudos ;)

Answer 2

Oie, Td Bom?!

3.

f(x) = 8 - 4x

a) f(0) = 8 - 4 • 0

f(0) = 8 - 0

f(0) = 8

b) f(- 1) = 8 - 4 • (- 1)

f(- 1) = 8 + 4

f(- 1) = 12

4.

f(x) = 1 + 5x

a) f(0) = 1 + 5 • 0

f(0) = 1 + 0

f(0) = 1

b) f(- 2) = 1 + 5 • (- 2)

f(- 2) = 1 - 10

f(- 2) = - 9

Att. Makaveli1996