Question

Dada a função f(x) = -3x - 4, determine x para que f(x) = 1/2. * A) -5/6 B) 1,5 C) 5/2 D) -3/2 E) 1/4

Answer 1

D) -3/2

.

f(x) = -3x - 4

$\dfrac{1}{2} = - 3x - 4$

$3x = - 4 - \dfrac{1}{2}$

$3x = - \dfrac{9}{2}$

$x = - \dfrac{3}{2}$