Points and their Coordinates

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Presentation transcript:

Points and their Coordinates Cartesian Plane René Descartes (1596-1650) y axis x axis origin

The Cartesian Plane is divided into four quadrants. II I III IV

(5, 6) Plotting Points in the Cartesian Plane (5, 6) is an example of an ordered pair. x coordinate y coordinate (5, 6) 6 5

Plotting Points in the Cartesian Plane (5, 6) is an example of an ordered pair. x coordinate y coordinate (5, 6)

(x, y) It is like entering a hotel … (– 3, 4) (– 3, 4) up the elevator in the door up the elevator (– 3, 4) (– 3, 4) left 3 up 4

Plot the following points. A(– 4, 6) B(2, – 3) A(– 4, 6) C(– 6, – 4) D(7, 3) D(7, 3) C(– 6, – 4) B(2, – 3) These points all lie in different quadrants. What do you notice about their coordinates?

Plot the following points. These points all lie on the axes, not in quadrants. What do you notice about their coordinates?