Unit 4 Review: Inequalities, Expressions, and Equations

Graphing Inequalites

100

x < 5

Open dot on 5 with the arrow going left 

200

x greater than or equal to 7

Open dot on 7 with arrow going right

300

x < -8

Open dot on -8 with the arrow going left

400

x + 5 > 3

Open dot on -2 with the arrow pointing right

500

5 - x > -3 

Open dot on 8 with the arrow going left 

Combining Like Terms

100

5a + 2a + 3

7a + 3

200

3x - 4x + 7 - 2

-x + 5

300

2x + 4 + 4x - 7 

6x - 3

400

-4x - 5 - 6x + 10

-10x + 5

500

4x - 8 - 10x + 12 - 2x

-8x + 4

Solve an Equation with a Variable on ONE side

100

x + 5 = 10

x = 5

200

x - 7 = 2 + 9 

x = 18

300

8 - x = 16

x = -8

400

2x = 10

x = 5

500

x - 3x + 9 = 19

x = -5

Solve an Equation with a Variable on BOTH sides

100

2x + 3 = x + 7

x = 4

200

-3x + 8 = -2x - 4 

x = 12

300

4x + 9 = 2x + 11

x = 1

400

-6x - 12 = -10x - 8 

x = -1

500

3x + 2x - 7 = -x - 2x + 3

x = 9/10

Random

100

Solve: x + 9 > -4

x > -13

200

-9 - 7 = ?

-16

300

4x - 8 = 32

x = 10

400

4x - 2x + 7 > 3(x + 2) 

1 > x

500

1/3(6x + 9 - 3x) = 1/2(4x -10)

x = 8