Warm up 8/25 Find the intercepts of each line

1. 3x + 2y = 18 (0, 9), (6, 0)

2. Find the equation of the linear function and graph

3. State whether the relation is a function. Explain how you know

(–2, –3) and (2, 5).

Homework Group

Check in with your group!

See which problems you have questions on

Help your group member.

Still unsure ? Thank about what you need to ask. Write those questions down.

- Go over as a class.

Be seated before the bell rings

DESK

homeworkWarm-up (in your notes)

Quiz – today

Ch 2 test tues 9/1

Agenda:

WarmupGo over hw p. 110 & 120Quiz Note 2.5

NotebookTable of content

Page1

1

1) 1-1 Sets of Numbers /1.2 Properties of Numbers

2.5 Linear inequalities

2) 1-3 Square Roots

3) 1-4 Simplify Algebra Expression

4) 1.6 Relations/1.7 functions

5) 1.9 Parent Functions

6) 2.1 Linear Equations/

2.2 Proportions

7) 2.3 & 2.4

8) 2.5 Inequalities

Learning targets

● 2.5 : I can graph linear inequalities in 2 variables

● I can write a linear inequality that models a real-word problem and graph the inequality to represent the solutions.

Don’t forget test retakes

2.5 Graphing Linear Inequalities

Graphing linear inequalities, it is nearly the same as graphing linear equation. An equal sign below the inequality means we have a __________ line and no equal sign mean we have a __________. In order to solve we must___________ or we can _____________________

Dash Lines Solid Lines

2.5 Linear Inequalities

inequality :

a b a is less than b

a b a is greater than b

a b a is less than or equal to b

At least

At most

Example: Problem-Solving Application

A school carnival charges $4.50 for adults and $3.00 for children. The school needs to make at least $135 to cover expenses.

A. Using x as the adult ticket price and y as the child ticket price, write and graph an inequality for the amount the school makes on ticket sales.

B. If 25 child tickets are sold, how many adult tickets must be sold to cover expenses?

11 Understand the Problem

The answer will be in two parts: (1) an inequality graph showing the number of each type of ticket that must be sold to cover expenses (2) the number of adult tickets that must be sold to make at least $135 if 25 child tickets are sold.

List the important information:• The school sells tickets at $4.50 for adults and $3.00 for children.• The school needs to make at least $135.

Homework P 128; 9. 10, 22-35

Closer:

Summarize what one person in your group learned in class today.