"I don't know how a line is parallel to the y-axis and at the same time it is located at point x = 2m and y = -2m." I completely agree with you. It doesn't make sense. Perhaps it would make more sense if I had access to more context, though. I just can't say since I am only seeing what you've presented. Given what I see, the wording seems very strange. If something is parallel to the y-axis, only the x value is required (in an x-y basis system.)
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