how do i solve y=x
It is stating that for any value of x, y has the same value.
If you were to graph this equation, you would have a line running from the lower left, through the origin, to the
upper right. Some of the coordinates it would pass through are (-10, -10), (5, 5), (12050, 12050). Also, it would
pass through (-19.765, -19.765), (-0.0003, -0.0003). Any x is matched by the y.