Question

Calcule a f(−2), na função definida por: y = 2x + 8
a) ( ) 4 b) ( ) 12 c) ( ) − 4 d) ( ) − 5 e) ( ) n. d. a

Answer 1

$\sf y = 2x + 8 \\ \\ \\ \sf y = 2 \cdot - 2 + 8 \\ \\ \\\sf y = - 4 + 8 \\ \\ \\ \sf {\color{red}y = 4}$

Att: Nerd1990

Answer 2

Resposta:

letra A

$y = 2 \times ( - 2) + 8 \\ y = - 4 + 8 \\ y = 4$