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Unformatted text preview: the Y line itself is vertical to show location of the numbers moving horizontally. To establish the location of a number line you would locate the number on the appropriate line and follow that line in both directions away from the point of the location line. Example X = 4, is first located on the horizontal X line and then followed through in both the north and south directions to show line 4 itself, (vertically)....
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- Spring '10