Respuesta :

y = 5/2 x + 2
2 y = 5 x + 4  ( we will use the substitution method )
2 ( 5/2 x + 2 ) = 5 x + 4
5 x + 4 = 5 x + 4
0 · x = 0
x , y ∈  R

Answer : "C" ) infinitely many solutions.