Question

Dada a função afim f(x) = 2x+5,calcular:
$f( - 3)$
$f(0)$
$f(2)$
$f( - 6)$

Answer 1

$f( - 3) = 2( - 3) + 5 = - 6 + 5 = - 1 \\ \\ f(0) = 2 \times 0 + 5 = 0 + 5 = 5 \\ \\ f(2) = 2 \times 2 + 5 = 4 + 5 = 9 \\ \\ f( - 6) = 2 ( - 6) + 5 = - 12 + 5 = - 7$