Resposta :
d)y= 2 + x/2 mmc = 2
4 + x = 0
x = - 4
c) y = 2x + 8
2x + 8 = 0
2x = - 8
x= - 8/2
x = - 4
b) y = 3x/8
3x/8 = 0 mmc=8
3x = 0
x = 0/3
x= 0
a) y = - 3x + 4
-3x + 4 = 0
-3x = - 4 (-1)
3x= 4
x= 4/3
4 + x = 0
x = - 4
c) y = 2x + 8
2x + 8 = 0
2x = - 8
x= - 8/2
x = - 4
b) y = 3x/8
3x/8 = 0 mmc=8
3x = 0
x = 0/3
x= 0
a) y = - 3x + 4
-3x + 4 = 0
-3x = - 4 (-1)
3x= 4
x= 4/3