Topic 4

Inequalities

100

What is the name of this symbol?

≤

Less than OR equal to

200

Show me the symbol for NOT equal

≠

300

Write an inequality for the following problem:

James has a budget of $15 at the super market. Let b represent the amount of money he can spend. 

b ≤ 15

400

Is 25 a solution for h if h≥30?

No

500

Ms. Ryan has a budget of $700 for a field trip. The bus costs $200, and each student, s, would cost $20. 

Write an inequality to represent the number of students she can bring on the bus.

20s ≤ 500

Equalities

100

Which of the following is a solution for d?

d+3=12

8,9,15,36

9

200

If 9x=81, does 9x-2=81-2?

Yes!

300

If 3+x=75, does 3+x+2=75-2?

No!

400

Which of the following is a solution for y

y-6.2=2.9

2.9, 3.3, 9.1

9.1

500

Which of the following is a solution for h?

h - 4/9 = 5 _1/3

5_7/9, 5_5/27, 5_5/12

5_7/9

Properties of Equality

100

How many properties of equality are there?

4

200

Which property of equality is shown?

9x+2=83

9x+2+3=83+3

Addition Property of Equality

300

Which property of equality is shown?

x=27

9x=27x9

Multiplication property of equality

400

Which property of equality is shown?

2x5=10

(2x5)/0.5=10/0.5

Division Property of Equality

500

Which property of equality is shown?

10x+3=33

10x+3-2=10x+3+2

None!

Create an equation

100

You have a deck of cards that you are sharing with your friend. You give your friend 18 cards, which leaves you with 24. Using t to represent the total number of cards, write an equation. 

t-18=24

t-24=18

24+18=t

200

Ms. Ryan pays a friend to watch her cats. She charges $20 a day, d. Write an equation to find how much she would pay, p.

20d=p

300

I went to the fair last week! It costs me $5 for admission and $2 for every ride. Write an equation where r represents the number of rides, and c represents cost. 

5+2r=c

400

I'm writing an article. I get paid $15, and an additional $0.05 per word, w. Write an equation representing my pay, p.

15+0.05w=p

500

Coordinates (5,3), (10,8), and (12,10) are on the same line. 

Using x and y, write an equation that is used to graph this line AND another ordered pair.

y=x-2

Examples can include: (7,5), (16,14) etc. 

Do the math

100

Show me the inequality z≤10

Open circle on 10, arrow to the left.

200

The number of books on a shelf, b, and the weight of the shelf. Which variable is independent?

B is the independent variable

300

3+h=104

h=?

h=101

400

25x = 125

x = ?

x = 5

500

1/6 • a = 4

a = ?

a = 24