Respostas

2014-01-05T00:13:37-02:00
A) F(X)=3x+4
3x+4=0
3x=-4
x=-4/3

b) y= 3/8 x
Y=3.x/8
y=24x

c)y=2x+8
2x=-8
x=-4

d)2+x/2
4+ x