Correção de exercício
Considere a Função do 1º Grau F(x) = -3x + 2. Determine os valores de x para que se
tenha:
a. F(x) = 0
b. F(x) = 11
c. F(x) = -1/2

tá tudo certo?
letra a:
f(x)=3x+2
f(0)=-3*0+2
f(0)=-0+2
f(0)=2

letra b:
f(x)=-3x+2
f(11)=-3*11+2
f(11)=-33+2
f(11)=-31

letra c:
f(x)=-3x+2
f(-1/2)=-3*1/2+2
f(-1/2)+1,5+2
f(-1/2)=3,5
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