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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 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 • Label all the different parts of a coordinate plane. • Which “quadrant” are the points located: • (5, -3) • (2, 0) • (–, –) • (–, +)
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 What’s the Domain and Range?
Functions Using the Mapping Diagram What’s the Domain and Range?
Function Using theVertical-Line Test What’s the Domain and Range?
Is this a Function? Pass!
Is this a Function? Do Not Pass!
Is this a Function? Pass!
Is this a Function? Input Output Pass! -2 3 6 0 1 3
Is this a Function? Input Output 0 6 9 -4 Do Not Pass! 1 3 8
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?