Unit 3: Notes

Resource for important Unit 3 topics:
Section 3.1:  Relations and Functions
Notes:

relation v function 1

Student Activity:

10.17.13 relation function game

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Section 3.2:  What is a function?
Notes:

To know if a graph is a function, we can use the “vertical line test.”  If you can draw a vertical line through any part of the graph, and it only hits the graph ONCE, it passes the test!  It’s a function!!  However, if you can find even ONE instance where you draw that vertical line and it hits twice… FAIL!!!  The graph is NOT a function.

vertical line test 1

How to Use the Vertical Line Test:


vertical line test 2

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Section 3.4:  Writing Domain and Range Using Set Builder Notation

set builder 1

set builder 2

Focus on how he talks about “bringing the graph back to the x-axis” or “y-axis”… just like our shading class!

General Overview:

Determine the Domain and Range of the Graph of a Function:

Student Activity:

set builder student 2

set builder student 1

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Section 3.5:  Function Notation and Evaluating Functions
Notes:

Student Example:
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Section 3.6:  Multiple Representations and Applications of Functions
Notes:
Student Example: