Absolute Value

The function is positive anywhere it passes above the x-axis. The function is negative anywhere it passes below the x-axis.

​

​Positive or Negative?

Multiple Choice

Where is the function positive and negative?

• Positive: -2 < x <2

  Negative: x < -2 and x > 2

• Positive: x < -1 and x > 1

  Negative: -1 < x < 1

• Positive: All real numbers except 0

  Negative: None

• Positive: x < 0

  Negative: x > 0

Multiple Choice

Where is the function positive and negative?

• Positive: -2 < x <2

  Negative: x < -2 and x > 2

• Positive: x < -2 and x > 2

  Negative: -2 < x <2

• Positive: All real numbers except 0

  Negative: None

• Positive: None

  Negative: All real numbers except 0

Multiple Choice

Where is the function positive and negative?

• Positive: -2 < x <2

  Negative: x < -2 and x > 2

• Positive: x < -1 and x > 3

  Negative: -1 < x < 3

• Positive: All real numbers except 0

  Negative: None

• Positive: x < 0

  Negative: x > 0

The function is increasing when the slope is positive and decreasing when the slope is negative.

​

​Increasing or Decreasing?

Multiple Choice

Where is the function increasing or decreasing?

• Increasing: x < 0

  Decreasing: x > 0

• Increasing: x > 0

  Decreasing: x < 0

• Increasing: None

  Decreasing: All real numbers

Multiple Choice

Where is the function increasing or decreasing?

• Increasing: x > 0

  Decreasing: x < 0

• Increasing: x < 0

  Decreasing: x > 0

• Increasing: x > 2

  Decreasing: x < 2

• Increasing: x > -1

  Decreasing: x < -1

Multiple Choice

Where is the function increasing or decreasing?

• Increasing: none

  Decreasing: All real numbers

• Increasing: x < -1

  Decreasing: x > -1

• Increasing: x > 1

  Decreasing: x < 1

• Increasing: x > 0

  Decreasing: x < 0