1. TUESDAY Turn in your signed syllabus to the front basket. Pick up a Unit 1 Parent Function Graph Packet FIRE UP!! Welcome BACK! 

2. Discuss with your neighbor reasons you should learn math! http://youtu.be/yir86f0Uulw

3. Fortune 500 Companies • We can teach our employees the technical parts of the job, but they need to know how to ask the right questions!! • We are looking for people that are reliable and can problem solve!!!

4. Parent Functions Students should be able to graph and state the characteristics for the following 8 parent functions Constant Identity/Linear Quadratic Cubic Absolute Value Square Root Reciprocal Greatest Integer

5. Parent FunctionOverview • Unit 1 will be focusing on 8 parent functions. • You learned many of these in Algebra-2, but we will explore more characteristics! • Let’s see what you recall from Alg-2???? • Sketch a graph of the 8 parent functions on the worksheet you picked up

7. Objectives • I can write solutions in Interval Notation format • I cangraph the 8 parent functions

8. These are all in Inequality Notation We are going to change them to INTERVAL NOTATION

9. Like a closed dot, , >< Like an open dot, , > < What is Interval Notation? [ ] means “included” (equal to) ( ) means “not included” HIGHLIGHT THIS IN YOUR NOTEBOOK!

10. All negative numbers All positive numbers Infinity??? We ALWAYS use ( ) with infinity!!! HIGHLIGHT THIS IN YOUR NOTEBOOK!

11. Interval Notation • Domain: All x-values that makeup the graph • Range: All y-values that makeup graph • Interval Notation: Used to show a range of values: • Example: If the domain is all numbers between –3 to 6 then in interval notation: • (-3, 6) • If we want to include the numbers –3 and 6, then • [-3, 6]

12. -1 0 2 6 Interval Notation Sets may be described in many ways:  by roster, by set-builder notation, by interval notation,  by graphing on a number line, and/or by Venn diagrams. We will be using interval notation and number lines! An interval is a connected subset of numbers. Example: Interval notation---- graphing on a number line

13. 13 13 -1 -1 0 0 2 2 6 6 Example: x < 13  or   x > 13 Note infinite Is always open! x < 0   or   2 < x< 10 Example: open closed

14. Practice • Let’s do some practice with the small white boards! • Please get • White Board • Marker • Eraser/Rag

15. Homework • Read Textbook pages A2-A3 in back on interval notation if you need additional help • WS 1-1 • Start Parent Function Packets See graphs at back of textbook.