1. Blue Day – 1/8/2014 Gold Day – 1/9/2014

2.  Porcupine Function WS

3.  Cartesian Plane  Domain and Range  4 th Six weeks passes  Last day to do a schedule change is Friday, January 16, 2015.  Student Holiday – Monday, January 19, 2015

4. 4  René Descartes (1596-1650)  philosopher  mathematician  joined algebra and geometry  credited with--- Cartesian plane

5. 5

6. 6  Formed by Intersecting two real number lines at right angles

7. 7 Horizontal axis is usually called the x-axis

8. 8 Vertical axis is usually called the y-axis

9. 9  x-y plane  rectangular coordinate system Cartesian Plane is also called:

10. 10

11. 11 Divides into Four Quadrants

12. 12 Divides into Four Quadrants I II III IV

13. 13 The intersection of the two axes is called the origin

14. 14 Math Alert  The quadrants do not include the axes.  So, a point on the x or y axis is not in a quadrant I II III IV

15. 15 Each point in the x-y plane is associated with an ordered pair, (x,y) (x,y)

16. 16 The x and y of the ordered pair, (x,y), are called its coordinates (x,y)

17. 17 Math Alert There is an infinite amount of points in the Cartesian plane

20.  We always start graphing ordered pairs from the orgin.  If x is 0, the graph will be on the y-axis  If y is 0, the graph will be on the x-axis.