Question

Considere a função f(x) = -3x + 2. Os valores de f(-2), f(-1), f(0), f(3) e f(4), são respectivamente:

A) 4, 6, 5, 12 e 10

B)5, 7, 6, 14, e 12

C)6, 8, 7, -4 e -8

D)7, 3, 8, -3 e -6

E)8, 5, 2, -5 e -10


*Coloca o cálculo pfv. Obrigado!

Answer 1

Resposta:

$\textsf{\{\:8, 5, 2, -7, -10\:\}}$

Explicação passo a passo:

$\mathsf{f(x) = -3x + 2}$

$\mathsf{f(-2) = -3(-2) + 2 \iff f(-2) = 6 + 2 \iff f(-2) = 8}$

$\mathsf{f(-1) = -3(-1) + 2 \iff f(-1) = 3 + 2 \iff f(-1) = 5}$

$\mathsf{f(0) = -3(0) + 2 \iff f(0) = 0 + 2 \iff f(0) = 2}$

$\mathsf{f(3) = -3(3) + 2 \iff f(3) = -9 + 2 \iff f(3) = -7}$

$\mathsf{f(4) = -3(4) + 2 \iff f(4) = -12 + 2 \iff f(4) = -10}$