Question

Dada a função definida por: f (x) = 3x-2
Calcule e marque a alternativa correta:
a) f (0)=
( ) 1
( ) 2
( ) -1
( ) -2

b) f (1)=
( ) 1
( ) 2
( ) -1
( ) -2.

c) f (-2)=
( ) 8
( ) 7
( ) -8
( ) -7.

d) f (-4)=
( ) 14
( ) 12
( ) -11
( ) -14.

Answer 1

Resposta:

Explicação passo-a-passo:

f(x) = 3x - 2

a) f (0) = 3 . 0 - 2 = 0 - 2 = - 2

( ) 1

( ) 2

( ) -1

(x ) -2

b) f (1) = 3 . 1 - 2 = 3 - 2 = 1

(x ) 1

( ) 2

( ) -1

( ) -2.

c) f (-2) = 3 . (-2) - 2 = - 6 - 2 = -8

( ) 8

( ) 7

(x ) -8

( ) -7.

d) f (-4) = 3 . (-4) - 2 = - 12 - 2 = - 14

( ) 14

( ) 12

( ) -11

( x) -14.