Set and Interval Notation – Day 1 Mrs. Ramsey

Set Notation  Using inequalities to describe your solution set (aka set notation)  This means “x is an element of all real numbers”  Union of Sets: U What do the two sets both have in total?  Intersection of Sets: ∩ What do the two sets both have in common?

Graph the following…    

Interval Notation

Interval Notation can contain union of sets with the union symbol

Graph some examples 1. (3, ∞) 2. [-2, ∞) 3. (- ∞, ∞) 4. [-4, 7) 5. (-14, 2]

Now go backwards  Write the interval notation for the following: A) B) C) D) E) F)

Homework/Classwork  With your team – complete the half sheet and turn it in before you leave  Homework – “Using Set and Interval Notation” online