Key Characteristics of Quadratic Function

Is the quadratic function concave up or concave down?

• Concave Up

• Concave Down

What are the intervals of increase?

• (- infinity, -1)

• (- infinity, -3)

• (-1, infinity)

• (-3, infinity)

Using the graph of the quadratic function, identify the domain.

• y > -6

• -2 < x < 10

• all real numbers

• y < -6

Using the graph of the quadratic function, identify the range.

• y < -6

• -2 < x < 10

• -∞ < x < ∞

What is the range of this function?

• All real numbers.

• All real numbers greater than or equal to 0.

• All real numbers greater than or equal to -2.

• All real numbers greater than or equal to 2.

What is the equation of the axis of symmetry?

• y = 0

• x = 0

• x = 3

• x = -3

What is a parabola?

• The straight graph of a quadratic function

• The circular graph of a quadratic function

• The V-shaped graph of a quadratic function

• The U-shaped graph of a quadratic function

What is the axis of symmetry?

• A line whose equation is the x-coordinate of a parabola's vertex

• A central line that divides a parabola into mirror images

• A line that intersects a parabola at the vertex

• All of the above

Which of the following graphs appropriately marks the axis of symmetry?

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Determine the domain and range of the function

• Domain: All real numbers

  Range: All real numbers

• Domain: x ≥ -4

  Range: All real numbers

• Domain: All real numbers

  Range: y ≥ -4

• Domain: -1 ≤ x ≤ 5

  Range: y ≥ -4