Question

A system of two linear equations has an infinite number of solutions. How is this possible?

Answer 1

A system of linear equations means two or more linear equations.
A system of two linear equations has an infinite number of solutions is the rarest case and it only happens when both the lines are same.
For example,
y = 3x+1 and 4y = 12x +8
These lines will have infinite number of solutions.
Hence,
The best answer is : 
B) The two equations are the same line.