Unit 1­a review of basic algebra.notebook

1

September 19, 2016

May 10­12:48 PM

Rewriting Inequalties Using Interval Notation

Objective for today's lesson:

• Writing the answer to an inequaltiy in interval notation.

AGENDA ­ Lesson 1.8

1)HW out!

2) Complete WU 1.7

3) Review HW 

4) Today ­ Interval Notation

Solutions­ HW 1­6

1)  14

2)  8

3)  $11 

4)  $52.5 

5)  $300 

6)  41 females and 21 males

Unit 1­a review of basic algebra.notebook

2

September 19, 2016

May 10­12:48 PM

Draw the following inequality on a number line.

Do you remember what the "extra line" means?

Students will be able to write an inequaltiy using interval notation.

Solution on next slide

Unit 1­a review of basic algebra.notebook

3

September 19, 2016

May 10­12:48 PM

Let's learn how to write an inequality using interval notation.

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

4

September 19, 2016

Sep 23­12:17 PM

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

5

September 19, 2016

May 10­12:48 PM

[ is called the left hand bracket symbol.

] is called the right hand bracket symbol.

Example: ‐8 x 7 written in interval notation [‐8, 7]

[‐8, 7] means the set of numbers between & including ‐8 and 7.

Students will be able to write an inequaltiy using interval notation.

[ ]

Unit 1­a review of basic algebra.notebook

6

September 19, 2016

May 10­12:48 PM

( is called the left hand parenthesis symbol.

) is called the right hand parenthesis symbol.

Example: ‐ 8 < x < 7 written in interval notation is (‐8, 7)

(‐8, 7) means the set of numbers between ‐8 and 7

(does not include ‐8 or 7).

Students will be able to write an inequaltiy using interval notation.

( )

Unit 1­a review of basic algebra.notebook

7

September 19, 2016

May 10­1:59 PM

Fill in the missing interval notation

with either a parenthesis or

bracket.

Inequality Notation Interval Notation

      (2, 15

(2, 15

[2, 15

2, 15

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

8

September 19, 2016

May 10­12:48 PM

How would you rewrite the following using interval notation?

1. 2. 

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

9

September 19, 2016

Sep 23­5:11 PM

0 1 2 3 4 5 6

0 1 2 3 4 5 6

0 1 2 3 4 5 6

0 1 2 3 4 5 6

(

(

)

)

]

][

[

Students will be able to write an inequaltiy using interval notation.

New graph

Unit 1­a review of basic algebra.notebook

10

September 19, 2016

May 10­12:48 PM

How would you rewrite x > -1 using interval notation? Ask yourself who is the first "#" and who is the last "#"?

What about x > -1?Draw it on a number

line:

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

11

September 19, 2016

May 10­12:48 PM

Write                in interval notation.

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

12

September 19, 2016

Sep 23­5:11 PM

0 1 2 3 4 5 6

0 1 2 3 4 5 6

(

]

Students will be able to write an inequaltiy using interval notation.

Unit 1­a review of basic algebra.notebook

13

September 19, 2016

Jul 8­9:49 AM

Inequality Notation Graph   Interval Notation

1.

3.

2.

4.

Students will be able to write an inequaltiy using interval notation.