Identifying a Quadratic Function Graph or Parabola

Using the graph of the quadratic function, identify the y-intercept.

• (4, -6)

• (0, 2)

• (.5, 0)

• (7.5, 0)

What is the y-intercept of this quadratic function: 4y = 40x²?

• 4

• 10

• 0

• 40

Identify the axis of symmetry.

• x = 0

• x = 1

• x = 2

Which of the following functions represent quadratic function?

• f(x) = 3x² + 1

• f(x) = 10

• f(x) = 4x³ + 2x +2

• f(x) = 3x - 4

Which of the following functions is no a quadratic function?

• f(x) = 10x² - x

• f(x) = -5x² + 2x + 2

• f(x) = 2x² - 6

• f(x) = 4x + 10

It is the turning point of a parabola.

• Vertex

• Axis of symmetry

• Maximum

• Curve

It is a vertical line that intersects the parabola at exactly one point.

• Vertex

• Axis of symmetry

• Maximum

• Curve

When the parabola opens downward, then the vertex is a ______________.

• 0

• Minimum

• Maximum

• None of the above

When the parabola opens upward, then the vertex is a ______________.

• 0

• Minimum

• Maximum

• None of the above

If the vertex is a maximum then this vertex is the ____________ point in the parabola.

• lowest

• highest

• middle

• None of the above