Question 134
You are on the right track actually. Simplifying this system, you get x = 9x. Or, moving x from left to right, 0 = 9x-x, or 0 = 8x. That means x = 0, and y is therefore also 0.

Here are the graphs of y = 3x and y = x/3. you see how they intersect in point x=y=0, or (0,0):

{{{ graph( 300, 200, -5, 5, -5, 5, 3x, x/3) }}}