Set Interval Inequality Notation

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

• (-7, 8)

• [-7, 8)

• [-7, 8]

• (-7, 8]

Write the following in interval notation
 x < 8

• (8, ∞)

• (8, -∞)

• (-∞, 8)

• [-∞, 8]

Write the following in interval notation
x < 3 or x ≥ 5

• (3, -∞) or (∞, 5]

• [-∞, 3) or [5, ∞]

• (-∞, 3) or [5, ∞)

• (3, -∞] or [∞, 5]

Write the following in interval notation
x > 6 and x ≤ 10

• (-∞, 6) and (10, ∞)

• [6, 10)

• (-∞, 6] and [10, ∞)

• (6, 10]

Write the following in interval notation
x ≥ 100

• (0, 100]  (Real quick)

• (∞, 100]

• [100, ∞)

• (∞, 100)

(-2,12) can be written in inequality notation as:

• -2 < x > 12

• -2 > x > 12

• -2 < x <12

• None of these

Look at the picture. Which graph best represents the solution set (-∞, -2) U (5, ∞)?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

When graphing b< 6 would you use an open or closed circle?

• open

• closed

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

• [-4, -1)

• (-4, -1)

• (-4, -1]

• [-4, -1]

What interval notation does the number line graph represent?

• [∞, -5)

• (∞, -5)

• [-5, ∞)

• (-5, ∞)