warm up 8/25 find the intercepts of each line 1. 3x + 2y = 18 (0, 9), (6, 0) 2. find the equation of...
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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).
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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.
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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
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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.
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Don’t forget test retakes
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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 _____________________
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Dash Lines Solid Lines
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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
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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?
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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.
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Homework P 128; 9. 10, 22-35
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Closer:
Summarize what one person in your group learned in class today.