Inequalities Opener

What is this symbol?

• less than
• greater than
• less than or equal to
• greater than or equal to

Which of these means that x is greater than or equal to 12

• x ≥ 12
• x  > 12
• x ≠ 12
• x ≥ 15

x is less than 9

• x < 9
• x > 9
• x ≥ 9
• x ≤ 9

What symbol could go in the box to make a true statement?
9 ___  -9

• >
• <
• ≥
• ≤

What symbol could go in the box to make a true statement?
71  ___  2

• >
• <
• ≥
• ≤

When writing a solution in interval notation, what brackets do i use for:

> or <

• [ ]

• ( )

When writing in interval notation, what kind of brackets do I use for:

or ≤ or ≥

• [ ]

• ( )

Write the following solution in interval notation:

x ≥ -3

• [ -3, ∞ )

• ( -3, ∞ )

• ( -∞ , -3 )

• ( -∞ , -3]

Write the following solution in interval notation:

z < 20

• ( -∞ , 20 )

• ( 20,∞)

• ( -∞ , 20)

• ( -∞ , 20]

Write in interval notation.