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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. 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

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  1. 4.2 Relations and Functions Standard: SWBAT understand relation and a function; determine if a given relation defines a function.

  2. Mini Quiz 33 • Graph each number on a coordinate plane • (3, -1) • (-5, 0) • Write the coordinate of the two points

  3. Quick Review • Label all the different parts of a coordinate plane. • Which “quadrant” are the points located: • (5, -3) • (2, 0) • (–, –) • (–, +)

  4. 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?

  5. Determining Functions Using a Table What’s the Domain and Range?

  6. Functions Using the Mapping Diagram What’s the Domain and Range?

  7. Function Using theVertical-Line Test What’s the Domain and Range?

  8. Is this a Function? Pass!

  9. Is this a Function? Do Not Pass!

  10. Is this a Function? Pass!

  11. Is this a Function? Input Output Pass! -2 3 6 0 1 3

  12. Is this a Function? Input Output 0 6 9 -4 Do Not Pass! 1 3 8

  13. 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?

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