3x+2y = 0

Question

x-2y = 0
If the system has infinitely many solutions, express your answer in the form x=x and y as a function of x
Your answer is
x=? y=?

Answer 1

Add the two equations together to get
4x=0, therefore x=0.
Substitute x=0 into the first equation to get y=0 also.
Thus x=0, y=0.