Question

Determina o zero ou a raiz da função do 1 grau
f(x)= -4x + 12
f(x)= 5x - 7
f(x)= - 5x

Answer 1

f(x)= -4x + 12
-4x + 12=0
-4x=-12 (-1)
4x=12
X=12/4
X=3

f(x)= 5x - 7
5x-7=0
5x=7
X=7/5

f(x)= - 5x
-5x=0 (-1)
5x=0
X=0/5
X=0