Warm Up September 2 Tuesday
Solve for y. (Rewrite the equation so it says y = …)
#1 3 x + y = 15
#2 -2x + 3y = -12
Note #4 Set Builder Notation
We will discuss how to write set builder notations.
I will use both set builder and interval notations to express variables.
Set Builder Notation
• SetThe symbol  means__________________
• The symbol  means ________________
Suppose we have the set A = {2, 4, 5, 8, 10, 15}
• Use the correct symbol:
6 ___ A
8_____A
How to read it:
A = { x | x ≥ 5}
A is the set of all x such that x is greater than or
equal to 5.
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Words
Number Line
Set Builder Notation
Interval Notation
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8
Words
Number Line
Set Builder Notation
Interval Notation
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Words
Number Line
Set Builder Notation
Interval Notation