mac1147_lecture10_1_c - L10 Rectangular Coordinates Graphs...

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91 L10 Rectangular Coordinates; Graphs of Equations; Circle The Rectangular Coordinate System is formed by the x axis and y axis. A plane with the rectangular coordinate system is called the coordinate plane or xy - plane . This plane has four quadrants: For each point P in the xy - plane , there is a corresponding ordered pair ( , ) x y , where x and y are called coordinates of P , and we write ( , ) P x y = . Example : Determine the quadrant(s) in which ( , ) x y is located if 0 x < and 0 y < 2 x > and 3 y =
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