Answer: -2x+y=3 is going up while 4x+2y=2 is going down
Explanation:
Technically going "up" or "down" is a horribly generalized term for what it looks like but it's the only way to describe it. If you put both equations in slope-intercept form:
-2x+y=3
y=2x+3
4x+2y=2
2y=-4x+2
y=-2x+1
You can see that the second equation has a negative slope meaning it will be going down, while the first equation has a positive slope. (The slope would be the m in y=mx+b)