Respostas

2013-10-02T21:53:28-03:00
Y= 5x-3 
y=0
0= 5x-3
3=5x
3/5=x
0,6=x 

b) y= 2x + 4
y=0
0= 2x + 4
-4 =2x
-4/2=x
-2=x

c)y= 3x-12
y=0
0= 3x - 12
12= 3x
12/3=x
4=x

d) y=2x + 16
y=0
0=2x + 16
-16= 2x
-16/2=x
-8=x