Respostas

2014-08-31T00:30:56-03:00
2014-08-31T01:45:52-03:00
Y=4x-2
y=-2
4x-2=0
4x=2
x=2/4
x=2/4; y=0
x > 2/4; y < 0
x < 2/4; y > 0