Transcript Review Lesson-10-22-15

Do Now
• Find the Inputs and Outputs
Inputs: _______
Outputs: _______
Target: I can identify the
domain and range of a
function.
©Algebra 1 by Southwest Washington Common Core Mathematics is licensed under a
Creative Commons Attribution 4.0 International License. 2014-2015
Real Numbers
Rational
Numbers
Integers
Whole
Numbers Counting
Numbers
0
1 3 5
2 4 3
1 2 3…
…,-3, -2, -1
Irrational
Numbers
2 
Domain and Range
Discrete and Continuous
Graphs
©Algebra 1 by Southwest Washington Common Core Mathematics is licensed under a
Creative Commons Attribution 4.0 International License. 2014-2015
Some graphs are connected lines or curves
called continuous graphs.
Some graphs are only distinct points. They are
called discrete graphs
Continuous graph
Discrete Graph
Interpreting Intervals Graphs
Interpreting Domain and Range Graphs
means: All real numbers from 0 to 4, not including 4.
• An empty dot or circle means that the number is not
included in the solution.
• A filled dot or circle means that the number is included
in the solution.
Some Examples
Finding the Domain and Range of a Relation
Give the domain and range of the graph.
The domain value is all x-values from 1
through 5, inclusive.
The range value is all y-values from 3
through 4, inclusive.
Domain: 1 ≤ x ≤ 5
Range: 3 ≤ y ≤ 4
The relation is a function. It passes the vertical line test.
Identifying Domain and Range
Give the domain and range of the relation. Tell whether the
relation is a function. Explain.
Range
Draw in lines to
see the domain
and range
values
Domain
Domain: –5 ≤ x ≤ 3
Range: –2 ≤ y ≤ 1
The relation is not a function. It fails the vertical line test.
-
Work alone first (10 minutes)
Work with a partner (10 minutes)
Ask for help to your partner first
Ask for teacher help
If you are done with today’s classwork then
start or complete the last handout given yesterday.
I will collect today’s work for grading.
Exit ticket