Representing solutions of linear inequalities in one variable on a number line

What does an open circle mean?

• The number is part of the solution.

• The number is NOT part of the solution.

What inequality does the number line graph represent?

• x > 5
• x < −5
• x ≥ 5
• x ≥ −5

Write the following solution in interval notation:

z < 20

• ( -∞ , 20 )

• ( 20,∞)

• ( -∞ , 20)

• ( -∞ , 20]

Solve the inequality and graph its solution.

 $40<5x$  

• A

• B

• C

• D

When you graph an inequality, you use a closed dot when you use which symbols?

• ≤

• ≥

• <

• >

Which graph matches this inequality?

x≥2

• 
• 
• 
• 

The inequality, x < 2, will make what type of line?

• dashed, vertical

• dashed, horizontal

• solid, vertical

• solid, horizontal

Complete the statement

• is greater than       >
• is less than            <
• is equal to              =

Express the following in Interval Notation

-8 ≤ x < 8

• [-8, 8]

• (-8, 8]

• [-8,8)

• (-8, 8)

Select the inequality shown

• x > 0

• x ≥ 0

• x < 0

• x ≤ 0