a. In which quadrants are the second coordinates of points positive? b. In which
Chapter 3, Problem 3.1.9(choose chapter or problem)
a. In which quadrants are the second coordinates of points positive? b. In which quadrants are the first coordinates of points negative? c. In which quadrant do points with a positive -coordinate and a negative -coordinate lie? d. On what axis are the first coordinates of points zero?
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