Question

Dada a função f(x) = - 4.x + 3, determine o valor de x para que se tenha:
a) f(x) = -4
b) f(x) = 0
c) f(x ) = 3
Alguém?

Answer 1

A

$x=-3$

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$-4-3+3\\\\=-7+3\\\\=-4$

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B

$x=1$

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$-4+1+3\\\\=-3+3\\\\=0$

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C

$x=4$

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$-4+4+3\\\\=0+3\\\\=3$