9.1-9.2 review Alg. 1B

Which graph is a parabola?

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Which equation would give the graph of a parabola?

• y = 2x - 3

• y = x₂ + 1

• y = x² + 4

If the a value is positive in the equation of y = ax² + c, which direction does the graph open?

• up

• down

• left

• right

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

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)