Interval Notation and Solving Equations

Write x ≥ 0

using interval notation:

• (∞, 0)

• (0, ∞)

• (∞, 0]

• [0, ∞)

Write x > -4

using interval notation.

• (-∞, -4)

• (∞, -4)

• (-4, ∞)

• (-4, -∞)

Write x ≤ 10

using interval notation:

• (-∞, 10]

• (-∞, 10)

• [10, ∞)

• (10, ∞)

Write x < 3

using interval notation:

• (-∞, 3]

• (-∞, 3)

• (3, -∞)

• [3, -∞)

Interpret (-∞, 5]

• x < 5

• x ≤ 5

• x > 5

• x ≥ 5

Interpret [-4, ∞)

• x > -4

• x < -4

• x ≥ -4

• x ≤ -4

Interpret (-3, ∞)

• x < -3

• x ≤ -3

• x ≥ -3

• x > -3

Write the domain for the graph in interval notation.

• [-2,4]

• -2≤x≤4

• [-4,6]

• -4≤x≤6

• (-1, 15]

• [-1, 15]

• (-1, 15)

What is the goal when we are solving equations?

• Make the variable disapear

• Isolate the Variable

• Double the Variable

• Make the equation equal zero