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4.2: Function Notation. Announcements. Test corrections: -3 points if submitted by tomorrow . Linear programming projects due next week! Read the instructions!. Vocab. Relation: any relationship between two variables. Set of ordered pair. Ex: (1, 2)

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Presentation Transcript

Announcements
Announcements

  • Test corrections: -3 points if submitted by tomorrow.

  • Linear programming projects due next week!

    • Read the instructions!


Vocab
Vocab

  • Relation: any relationship between two variables.

    • Set of ordered pair. Ex: (1, 2)

  • Function: for every “x” value there is only one “y” value.

    • The “x” never repeats!

  • Domain: x-coordinates

  • Range: y-coordinates



Vertical line test
Vertical Line Test

  • Use it to determine if the graph is a function or not.


Are these functions
Are these functions?

  • (Philip, 14), (Kara, 15), (Mia, 14), (Harry, 16)

    x =

    y =

  • (-2, 3), (0, -9), (2, 5)


Are these functions cont
Are these functions? cont.

  • (4, 8), (5, 9), (4, 9)

  • (3, 0), (5, 0), (-8, 0)


Function notation
Function Notation

  • f(x) = “f of x”

    • f(x) = y

    • x is the input

    • y is the output


Example
Example

  • Given f(x) = 3x + 2, find f(-2), f(0), and f(4).

  • Given h(t) = 2t2 – 4. Find h(3).


H.W

Pg. 181 #1-3