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

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Presentation transcript:

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

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

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

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

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

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

x y Plot the following points. F(0, 6) E(5, 0) H(0, – 3) G(– 7, 0) H(0, – 3) E(5, 0) These points all lie on the axes, not in quadrants. What do you notice about their coordinates?

x y Using a Table to Graph a Line Complete the chart: y = x + 4 xy -2 (-2)+4 = 2 0 (0)+4 = 4 2 (2)+4 = 6 4 (4)+4 = 8

x y Using a Table to Graph a Line Complete the chart: y = 3x - 5 xy 3(-1)-5 = (0)-5 = (1)-5 = (3)-5 = 4