Math II-Mod 3 Topic 3 Opener #9 (3/21/19)

Which is the correct vertex form? 

• f(x)=a(x+h)²+k
• f(x)=a(x-h)²-k
• f(x)=a(x+h)²-k
• f(x)=a(x-h)²+k

The axis of symmetry goes through the x-coordinate of the vertex. 

• True
• False

What are the transformations of the parabola?

y = ¼(x – 1)² + 8

SELECT ALL THAT APPLY.

• Wider than y = x²

• Narrower than y = x²

• Up 8 from y = x²

• Right 1 from y = x²

• Right 8 from y = x²

What is an equation of a parabola in vertex form that opens down and is shifted left 4 and up 5 from the parent function y = x²?

• y = 2(x – 4)² + 5

• y = 2(x + 4)² + 5

• y = -2(x – 4)² + 5

• y = -2(x + 4)² + 5

What is the VERTEX of the parabola?

y = -5(x – 4)² + 1

• (4, 1)

• (-4, 1)

• (-4, -1)

• (4, -1)

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

• y = -2
• x = 3
• x = -3
• y = 2

Tags

CCSS.8.G.A.3

Identify the range of the following quadratic function.

f(x) = -5(x + 1)² - 8

• (-∞, ∞)

• (-∞, 8)

• [8, ∞)

• (-∞, 8]

Identify the axis of symmetry of the following quadratic function.

f(x) = 12(x + 5)² - 1

• x = 1

• x = -5

• x = 0

• x = 5

What is the domain of the quadratic function shown in the graph?

• x ≥ –4

• All real numbers

• y ≥ –4

• y ≤ –4

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What are the zeros of the equation y = x(x + 5)?

• 0, –5

• –5

• 0, 5

• 1, –5

Tags

CCSS.HSF-IF.C.7C