Quadratic Functions in Vertex Form

How can you tell the direction of the opening of the graph of a parabola by looking at the equation?

• The vertex tells you the direction of the opening
• The value of "a" tells you the direction of the opening.
• All parabolas open upward
• All parabolas open downward

Does the graph of

f(x)= -2(x + 5) + 2

have a minimum or a maximum?

• Minimum

• Maximum

• It has neither.

• It has both.

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Find the y-intercept of
f(x) = 2x²-2x + 1

• 2
• -2
• 1
• -1

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

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

• y = -2
• x = 3
• x = -3
• y = 2

Find the vertex.

• (-3,-4)
• (-2,-4)
• (2,-4)
• (2,4)

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Find the vertex

• (-8,7)
• (-8,-7)
• (8,-7)
• (8,7)

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

Which equation is equivalent?

• y = (x+6)² + 10
• y = (x+6)² - 10
• y = (x - 6)² + 10
• y = (x+6)² - 10

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Find the axis of symmetry

• x = -1
• x = -2
• x = 2
• x = 1

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

Which equation has a vertex of (-3, 4)?

• y = 2(x+3)² + 4
• y = (x+3)² - 4
• y = (x-3)² + 4
• y = 2(x - 3)² + 4

Tags

CCSS.HSF.BF.B.3

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Which of the following is the correct equation for the given graph?

• f(x) = (x - 2)² - 1
• f(x) = (x + 2)² - 1
• f(x) = -(x + 2)² - 1
• f(x) = -(x - 2)² - 1

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7