Question

Determine a coordenadas do ponto de intersecçao das retas : 2× y-1=0 e 3× 2y-4=0

Answer 1

r: 2x-y-1=0      ==>vezes 2  ==> 4x-2y-2=0  (i)

s: 3x+ 2y-4=0  (ii)

(i)+(ii)

7x-6=0 ==>x=6/7

Usando 2x-y-1=0  ==>12/7-y-1=0  ==>y=12/7-1=5/7