What is the missing angle in the following triangles. #1. 17, 60, x #2

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What is the missing angle in the following triangles. #1. 17, 60, x #2 What is the missing angle in the following triangles? #1. 17, 60, x #2. 145, 12, x #3. 90, 45, x #4. 120, 10, x Bell Ringer

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

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

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

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

Notes

Example 1 Graphing Ordered Pairs

Example 2 Graphing Ordered Pairs

Example 3 Graphing Ordered Pairs

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.

Example 4 Identify Ordered Pairs

Example 5 Identify Ordered Pairs

Example 6 Identify Ordered Pairs

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

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.

Example 7 Relations as Tables

Example 8 Relations as Tables

Example 9 Relations as Graphs

Example 10 Relations as Graphs

Class Work Section 1.4 #1-10

Homework Section 1.4 #12-32 even

Homework Section 1.4 #12-32 even

Homework Section 1.4 #12-32