Aug 16th

1
Warm up 8/25
Find the intercepts of each line
(0, 9), (6, 0)
1. 3x 2y 18
2. Find the equation of the linear function and
graph
(2, 3) and (2, 5).
3. State whether the relation is a function.
Explain how you know
2
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.
3
Be seated before the bell rings
Agenda Warmup Go over hw p. 110 120 Quiz
Note 2.5
DESK
Warm-up (in your notes)
homework

• Quiz today
• Ch 2 test tues 9/1

4
Before the quiz Group Study 1.6 / 1.7
relations and function notation ( back
left) 1.9 parent graphs ( back right) 2.1/2.2
Solve equations/inequalities/ proportions (
front right) 2.3/2.4 Graph and write equations of
linear function parallel and perpendicular
lines ( front left )
5
Notebook
1
Table of content
2.5 Linear inequalities
Page
1) 1-1 Sets of Numbers /1.2 Properties of
Numbers
1
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.

6
Dont forget test retakes
7
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
_____________________
8
Dash Lines
Solid Lines
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2.5 Linear Inequalities
inequality
a is less than b
a is greater than b
At least
a is less than or equal to b
At most
14
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?
15
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.

16
Homework P 128 9. 10, 22-35
17
Closer
Summarize what one person in your group learned
in class today.