Quizizz #1 Unit 4A: Key Characteristics of Quadratics

What are the vertex and axis of symmetry of the parabola f(x) = -x² - 4x + 12?

• Vertex: (-2, 16); Axis of Symmetry: x = -2

• Vertex: (2, 0); Axis of Symmetry: x = 2

• Vertex: (2, 4); Axis of Symmetry: x = 2

• Vertex: (-2, 4); Axis of Symmetry: z = --2

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CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

• true

• false

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CCSS.HSA.REI.B.4

What is the vertex?

• (4,-4)
• (2,0)
• (0,2)
• (6,0)

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CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

The Standard Form of a quadratic equation...

• y = ax² + bx + c

• y = a(x - h)² + k

• y = mx² + b

• y - y₁ = m(x - x₁)

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CCSS.HSA.CED.A.1

Describe the end behavior of the graph.

• As x increases, f(x) decreases

  As x decreases, f(x) decreases

• As x increases, f(x) increases

  As x decreases, f(x) increases

• As x increases, f(x) increases

  As x decreases, f(x) = 0

• As x increases, f(x) increases

  As x decreases, f(x) decreases

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CCSS.HSF-IF.C.7A

Describe the end behavior of the graph.

• x → ∞, y→ ∞ and
  x→ ∞, y→⁻∞
• x → ∞, y→ ∞ and
  x→⁻∞, y→∞
• None of these
• x →∞,y→⁻∞ and
  x→∞, y→⁻∞

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CCSS.HSF-IF.C.7A

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

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CCSS.HSF-IF.C.7A

What is the end behavior of the graph of y = -3x² +7x - 2?

HINT: Type it into desmos and look at the direction of the graph.

• As x increases, f(x) increases

  As x decreases, f(x) decreases

• As x increases, f(x) decreases

  As x decreases, f(x) decreases

• As x increases, f(x) increases

  As x decreases, f(x) increases

• As x increases, f(x) decreases

  As x decreases, f(x) decreases

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CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Consider a parabola that intersects the x-axis at points (8, 0) and (3, 0). Which of the following is the equation of the parabola?

HINT: Graph each equation in the desmos graphing calculator and see which one has the same x-intercept.

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CCSS.HSF-IF.C.7A

What is the range of the quadratic function?

• All Real Numbers

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CCSS.8.F.A.1

CCSS.HSF.IF.B.5