Question

Responda a numero 8.

Answer 1

$f(x) = ax + b \\ f( - 1) = 3 \\ 3 = - a + b \\ f(1) = - 1 \\ - 1 = a + b \\ 2 = 0a + 2b \\ b = 1 \\ a = - 1 - b \\ a = - 1 - 1 \\ a = - 2 \\ f(x) = - 2x + 1 \\ f(3) = - 2 \times 3 + 1 \\ f(3) = - 6 + 1 \\ f(3) = - 5$