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4.2 Relations and Functions. Standard: SWBAT understand relation and a function; determine if a given relation defines a function. Mini Quiz 33. Graph each number on a coordinate plane (3, -1) (-5, 0) Write the coordinate of the two points. Quick Review.

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4 2 relations and functions

4.2 Relations and Functions

Standard: SWBAT understand relation and a function; determine if a given relation defines a function.

mini quiz 33
Mini Quiz 33
  • Graph each number on a coordinate plane
    • (3, -1)
    • (-5, 0)
  • Write the coordinate of the two points
quick review
Quick Review
  • Label all the different parts of a coordinate plane.
  • Which “quadrant” are the points located:
    • (5, -3)
    • (2, 0)
    • (–, –)
    • (–, +)
vocabulary
Vocabulary

Relations: Set of ordered pairs

Domain (input): 1st coordinates

Range (output): 2nd coordinates

Function: “every input has exactly one output”

What’s the Domain and Range?

determining functions using a table
Determining Functions Using a Table

What’s the Domain and Range?

functions using the mapping diagram
Functions Using the Mapping Diagram

What’s the Domain and Range?

function using the vertical line test
Function Using theVertical-Line Test

What’s the Domain and Range?

is this a function3
Is this a Function?

Input Output

Pass!

-2

3

6

0

1

3

is this a function4
Is this a Function?

Input Output

0

6

9

-4

Do Not Pass!

1

3

8

wrap up
Wrap Up
  • Relations and Functions
    • Using a Table
    • Mapping Diagram
    • Vertical-Line Test

HW: P. 184 #1-13 all, 19-31 odd

DLUQ: How does a function pass the vertical line test?