Positive and Negative Intervals of Functions

Over what interval is the graph increasing?

• -2 < x < -1

• -1 < x < 2

• x > 4

• -4 < x < -2

Where is the graph constant?

• x > 4

• -1 < x < 1

• x < -4

• 2 < x < 3

When is this function increasing?

• [-2, 2]

• (0,5)

• [-4, -1]

• [4 , ∞)

Where is the function decreasing?

• (-∞, -1)
• (-1, ∞)
• (-∞, 3)
• (-∞, ∞)

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

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

Write the inequality in interval notation.

• (-2,5)
• (-∞,-2) or (5,∞)
• [-2,5]
• (-∞,-2] or [5,∞)

What interval notation does the number line graph represent?

• [∞, -5)
• (∞, -5)
• [-5, ∞)
• (-5, ∞)

Where is the function positive?

• (6, ∞)
• (-∞, 6)
• (0, ∞)
• (-∞, 0)

Where is the function negative?

• (6, ∞)
• (-∞, 6)
• (0, ∞)
• (-∞, 0)

#7 - List the types of intervals that the graph demonstrates in order.

• decreasing, constant, increasing, constant
• increasing, decreasing, constant
• increasing, constant, increasing, constant
• increasing, constant, decreasing, constant