Função do 1º grau Flashcards

1
Q

Fórmula

A

f(x)= a.x+b
a e b ≠ 0 –> afim
a≠0 e b=0 –> linear
A=1 e b=0 –> identidade

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2
Q

coeficiente angular

A

Intercepta o eixo x
a=tg ângulo= yf-yi/xf-xi

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3
Q

Raiz

A

x=-b/a f(x)=0
x>-b/a f(x)>0
x<-b/a f(x)<0

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4
Q

Coeficiente linear

A

intercepta o eixo Y
b

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5
Q

Crescente ou decrescente a f de 1 grau

A

a>0 crescente
a<0 decrescente

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