Unit 2, Lesson 3 - textbook section 4.3 & 4.6 Sept. 27, 2010

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# Unit 2, Lesson 3 - textbook section 4.3 & 4.6 Sept. 27, 2010 - PowerPoint PPT Presentation

Unit 2, Lesson 3 - textbook section 4.3 &amp; 4.6 Sept. 27, 2010. RELATIONS and FUNCTIONS DOMAIN and RANGE. A relation is a pairing between 2 sets of numbers. A relation can be represented in a variety of ways:. A SET OF ORDERED PAIRS. TABLE. GRAPH. MAPPING.

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Unit 2, Lesson 3 -

textbook section 4.3 & 4.6

Sept. 27, 2010

RELATIONS and FUNCTIONS

DOMAIN and RANGE

A relation is a

pairing between 2 sets of numbers

A relation can be represented in a variety of ways:

A SET OF ORDERED PAIRS

TABLE

GRAPH

MAPPING

WE'VE SEEN ALL OF THESE THIS YEAR EXCEPT A MAPPING.

Write these words down:

Domain and Range

Domain: the independent variable

Range: the dependent variable

The domain is also the set of all inputvalues.

The range is the set of all the outputvalues.

The inverse is when you flip the domain and the range.

C. WRITE THE INVERSE OF THE RELATION ABOVE.

C. { ( 3, 4) , (-1,-2) , (-4, 2) , ( -4, 0 ) }

CLASS PRACTICE - See handout

1st - Draw the missing representations.

2nd - List the Domain and Range.

HOMEWORK

PRACTICE WORKBOOK SECTION 4-3

(PW 4-3)

ALL PROBLEMS

Ordered Pair

{ (-2,1)

(0, -1),

(2, 1) }

REVIEW OF YESTERDAY'S LESSON

The domain is also the set of all input/independentvalues.

The range is the set of all the output/dependentvalues.

The inverse is when you flip the domain and the range.

A function is a special type of relation.

It is a pairing between two sets of numbers in which each element of the first set is paired with EXACTLY one element of the second set

In other words, for every DOMAIN there is one RANGE.

Example:

HOMEWORK -

PW 4-6 # 1-7 ALL

# 8-12 EVEN