Section 2.1 Rectangular Coordinates-Relations

Label the horizontal line as the x axis and the

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Unformatted text preview: tal line as the x -axis and the vertical line as the y -axis. The axes divide the plane into four regions, called quadrants. y II 5 4 3 2 1 -5 -4 -3 -2 -1 -1 -2 -3 III -4 -5 I 12345 IV x Outline Relations Graphing Relations Circles Coordinates A point P in a coordinate plane is labeled with a pair of ordered numbers (a, b ) called coordinates: a is the real number on the x -axis intersected by the line perpendicular to the x -axis passing through P . b is the real number on the y -axis intersected by the line perpendicular to the y -axis passing through P . a is called the x -coordinate...
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