x = 150 did this help you?
They can not, there are only 2 sides and they probably flipped it different ways. They got 'lucky'.
Start the line at 3 on the y-axis (vertical). then go down two boxes and to the right three & make a mark at that point. keep going down two and over three until the end of the graph. then just connect the marks.
It’s the first one!! :)))