Question

Dada a função f(x) = 4x – 3, o valor de x para o qual f(x) vale –1 é:
Escolha uma opção:
a. 2/3
b. –1
c. –1/2
d. 1
e. 1/2.

Answer 1

$\large\boxed{\begin{array}{l}\rm f(x)=4x-3\\\rm 4x-3=-1\\\rm 4x=3-1\\\rm 4x=2\\\\\rm x=\dfrac{2\div2}{4\div2}\\\\\rm x=\dfrac{1}{2}\\\huge\boxed{\boxed{\boxed{\boxed{\rm\dagger\red{\maltese}~\blue{alternativa~e}}}}}\end{array}}$