Transcript Creating Equations and Inequalities

WARM UP
A rectangle 24 meters long has the same
area as a square that is 12 meters on a
side. What are the dimensions of the
rectangle?
ONE MORE…
The sum of three consecutive
even integers is 78. Find the
three numbers that satisfy the
condition.
CREATING
EXPRESSIONS
EQUATIONS, AND
INEQUALITIES
N
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EX.1 WRITE AN EQUATION
a. The sum of twice a
number d and 3 is 12.
b. Six less than four
times a number j is 18.
PRACTICE
WRITE AN EQUATION
The sum of 12 and the quantity 8 times a
number k is equal to 48.
PRACTICE DOS
The product of 8 and a quantity
x+4 is 22.
MORE PRACTICE
WRITE AN INEQUALITY
KEY WORDS
EX.2 WRITE AN INEQUALITY
a. The product of 8 and b. The difference of 10
a number q is at least and a number w is no
32.
more than 8.
PRACTICE
WRITE AN INEQUALITY
a. The sum of a
number b and 3 is
greater than 8 and
no more than 12.
b. The product of 9
and the quantity 5
more than a number t
is less than 6.
MULTIPLE CHOICE PRACTICE
Which inequality corresponds to the sentence:
“Five less than the product of a number n and -6
is at least 8.”?
𝒂. 𝟓 − −𝟔𝒏 ≥ 𝟖
𝒃. −𝟔𝒏 − 𝟓 ≤ 𝟖
−𝒏
𝒄.
−𝟓 ≥𝟖
𝟔
𝒅. −𝟔𝒏 − 𝟓 ≥ 𝟖
CREATE EQUATIONS AND
INEQUALITIES FOR …
EX.3 WRITE AN EQUATION
If you sign up for a gym membership
during the month of may, you are
charged a joining fee of $78. The
monthly membership cost is $32.32.
Write an equation the represents your
total cost.
PRACTICE WRITE AN EQUATION
A recording studio charges musicians
an initial fee of $50 to record an
album. Studio time costs an additional
$35 per hour. Write an equation that
represents your total cost.
You decide to record an album with this
studio. You book the studio from 5:00p.m.
to 8:00p.m. for your first recording. How
much will you have to pay?
EX.4 WRITE AN EQUATION
Your family spends $45 on tickets to
the Georgia Aquarium. It costs an
additional $5 per hour to park. Write
an equation that represents your total
cost.
Your family stays at the aquarium for 4
hours, how much will you have to pay for
parking?
EX.5 WRITE AN INEQUALITY
EX.5 (CONT.) ANSWER
a.
b.
PRACTICE WRITE AN INEQUALITY
PRACTICE (CONT.) ANSWER
a.
b.
HOMEWORK
Handout and Learn
the Norcross Fight
Song
Norcross High School Fight Song
(The Washington and Lee Swing)
Oh when the Norcross Devils stand to fight,
the devil pride will win this game tonight.
For the blue and white we’ll yell and cheer,
for we are victory bound another winning year.
So just keep up your spirit ever true,
Norcross High will come and fight for you.
We always love the white and blue (white and
blue).
Norcross High ……. Hey!