Interval Notation on the Number Line

Express the following in Interval Notation
-8 ≤ x < 8

• [-8, 8]
• [-8,8)
• (-8, 8]
• (-8, 8)

Express the following in Interval Notation
-9 < x ≤ -4

• [-9, -4]
• (-9,-4]
• [-9, -4]
• (-9,-4)

Express the following in Interval Notation
 -9 < x ≤ -4

• [-9, -4]
• (-9,-4]
• [-9, -4]
• (-9,-4)

Express the following in Interval Notation
-9 < x < -8.5

• [-9, -8.5]
• [-9, -8.5)
• (-9, -8.5]
• (-9, -8.5)

Express the following interval in Set notation:
[3, 5]

• 3 ≤ x ≤ 5
• 3 < x ≤ 5
• 3 ≤ x < 5
• 3 < x < 5

Express the following interval in Set notation:
(-7, 15]

• -7 ≤ x ≤ 15
• -7 < x ≤ 15
• -7 ≤ x < 15
• -7 < x < 15

Express the following interval in Set notation:
[14.2, 19.6)

• 14.2 ≤ x ≤ 19.6
• 14.2 < x ≤ 19.6
• 14.2 ≤ x < 19.6
• 14.2 < x < 19.6

Express the following interval in Set notation:
(-63, -62)

• -63 ≤ x ≤ -62
• -63 < x ≤ -62
• -63 ≤ x < -62
• -63 < x < -62

Look at the graph. Write the inequality in interval notation.

• (-2,5)
• (-∞,-2)⋃(5,∞)
• [-2,5]
• (-∞,-2]∪[5,∞)

Write the following in interval notation
-7 ≤ x < 8

• (-7, 8)
• [-7, 8)
• [-7, 8]
• (-7, 8]