Respostas

2014-05-18T20:13:26-03:00
2014-05-18T21:04:08-03:00
Ponto A
xa= -1
ya= 4

Ponto B
ya= 3
yb= 4

d= √(xb - xa )² + (yb - ya )²
d= 
√((3-(-1))² + (4-4)²
d= √ (4)² + 0
d= √16
d= 4