Question

which system of equations has infinitely many solutions

Answer 1

F = 2 solutions
G = 2 solutions 
H = infinitely
J = 2

Answer 2

H. Same slope and same y-intercept is the same line so there will be an infinite number of solutions.
2x+4y=6 they are all divided by 2 so you get x+2y=3 which is the same equation as the other linear equation.