Which of these graphs shows that the linear system 3x + 2y = 12 and 6x + 4y = 24 has an infinite number of solutions?

None of the graphs show that the linear system 3x + 2y = 12 and 6x + 4y = 24 has an infinite number of solutions. However, if both equations are graphed on the same coordinate plane, it would show that the two lines are coincident, indicating that there are infinite solutions.