1. What is the missing angle in the following triangles. #1. 17, 60, x #2
What is the missing angle in the following triangles? # , 60, x # , 12, x # , 45, x # , 10, x
Bell Ringer

2. Quiz on Thursday Section 1.4 and 2.6
ALSO, the November Calendar is now on my website
mrskey8math.weebly.com

3. Starting a New Unit  Section 1.4 Ordered Pairs and Relations
R drive > Key > Week 13 > Tuesday > 1.4 PowerPoint File > Save As > P drive > Math > Week 13 > 1.4 PowerPoint

4. Vocabulary
Coordinate Plane – Formed by the intersection of two number lines that meet at right angles at their zero points
Ordered Pair – Used to locate any point on a coordinate plane
X – Coordinate- The first number in the ordered pair
Y – Coordinate – The second number in the ordered pair

5. Vocabulary X – Axis- The horizontal number line
Y – Axis – The vertical number line
Origin – (0,0) The point at which the number lines intersect

6. Notes

7. Example 1 Graphing Ordered Pairs

8. Example 2 Graphing Ordered Pairs

9. Example 3 Graphing Ordered Pairs

10. Notes
Sometimes a point on a graph is named by using a letter. To identify its location, you can write the ordered pair that represents the point.

11. Example 4 Identify Ordered Pairs

12. Example 5 Identify Ordered Pairs

13. Example 6 Identify Ordered Pairs

14. Vocabulary Relation – A set of ordered pairs
Domain - The set of x coordinates
Range – The set of y coordinates

15. Notes
A set of ordered pairs such as {(2,3), (3,5), (4,1), (5,6)} is a relation. A relation can also be shown in a table or a graph.

16. Example 7 Relations as Tables

17. Example 8 Relations as Tables

18. Example 9 Relations as Graphs

19. Example 10 Relations as Graphs

20. Class Work Section 1.4 #1-10

21. Homework Section 1.4 #12-32 even

22. Homework Section 1.4 #12-32 even

23. Homework Section 1.4 #12-32