Question

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POR FAVORRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
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Estude o sinal de cada função afim:

a) y = 3x+9

b) y = -4x+16

c) y= 6x-30

d) y= -2x+1

Answer 1

Basta olhar o coeficiente angular da função:

$f(x) = ax + b$

Se a > 0 => f(x) será crescente;

Se a < 0 => f(x) será decrescente.

a)

Crescente

b)

Decrescente

c)

Crescente

d)

Decrescente