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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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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).
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H.W

Pg. 181 #1-3

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