Parabolas

What is the vertex of this quadratic equation?

y = 2(x + 2)² + 4

• (-2,4)

• (2,4)

• (4,-2)

• (-4,-2)

What is the vertex of this parabola?

• (−1, 3)
• (−3, 11)
• (−2, 5)
• (0, 5)

What is the y-intercept of this parabola?

• (−1, 3)
• (−3, 11)
• (−2, 5)
• (0, 5)

Where is the axis of symmetry for this parabola?

• x = −1
• x = 0
• y = 3
• x = −3

What do we call the graph of a quadratic function?

• parabola
• linear
• cubic
• sinusoidal

What is the maximum/minimum of a parabola called?

• vertex
• point
• top
• bottom

What is the vertex?

• (0, - 1)
• (0, 0.5)
• (-1, 0)
• (0.5, 0)

Does the quadratic have a max/min vertex, and does the parabola open up/down?

• max/ opens down
• min/ opens up
• max/ opens up
• min/ opens down

How do you know if a parabola has a minimum vertex?

• When a is positive there is a minimum

  example: y=x^2

• When a is negative there is a minimum

  example: y= - x^2

The axis of symmetry is a line that goes through the...

• y-intercept
• any random point
• vertex
•  x-axis or y-axis