Respostas

2014-05-07T12:54:30-03:00
X=3p-1 y=4p+1 substituindo as coordenadas (x,y) na reta temos
2x+3y-19=0
2(3p-1) + 3(4p+1)-19=0
6p-2+12p+3-19=0
18p-2+3-19=0
18p=18
p= 18/18