Question

Considere a função f(x)=3x-1 qual o valor de x quando y=7

Answer 1

Olá !

Resolução :

$\mathsf{ F(X) = 3X - 1 } \\\\\\ \mathsf{ 7 = 3X + 2 } \\\\\\ \mathsf{ 3X + 2 = 7} \\\\\\ \mathsf{ 3X = 7 - 2 } \\\\\\ \mathsf{ 3X = 5 } \\\\\\ \mathsf{ X =\dfrac{5}{3}}$

Resposta :






$\mathsf{ X =\dfrac{5}{3}}$