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y = 0 line
Else clues• Base line
• Graph basis
• Graph line
• Graph of y = 0
• Graph part
• Graph reference line
• Horizontal base of a coordinate system
• Horizontal graph line
• Horizontal line
• Horizontal line on a graph
• Horizontal reference line on a graph
• It often represents time
• It's horizontal in a Cartesian coordinate system
• Line on which y = 0
• Place for Cartesian coordinates
• The line y = 0
• The line y = 0, in math