Key Features of Quad Equations

How do I find the y-value of the vertex?

• factor

• x = -b / 2a gives you the y-value of the vertex

• find x = -b / 2a and then plug in for x and solve for y.

• find -b / 2a and then plug in for y and solve for x.

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

What is the equation for the axis of symmetry?

• x = b / 2

• x = 2a / -b

• x = 2 / b

• x = -b / 2a

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

What is the vertex of y=x²+4x+3?

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

What is the axis of symmetry of y=2x²-4x+9?

• x = 1
• x = -1
• x = -2
• x = 4

Tags

CCSS.HSA.REI.B.4

What is the axis of symmetry?
f(x) = x² - 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Tags

CCSS.HSA.REI.B.4

What is the axis of symmetry of y=2x² - x - 6?

• x = 1/4

• x = -1/4

• x = 49/8

• x = -49/8

Tags

CCSS.HSA.REI.B.4

Determine the axis of symmetry of y = -6x² -8

• x = -6

• x = 8

• x = -8

• x = 0

What's the y-intercept of y = 3x²- 6x + 4

• (4,0)
• (-4,0)
• (0,-4)
• (0,4)

Tags

CCSS.HSF-IF.C.7A

What is the domain and range of the following function:
y = 3x² -6x +5

• Domain: All Real Numbers
  Range:  $y\le-2$  

• Domain: All Real Numbers
  Range:  $y\ge-2$  

• Domain: All Real Numbers
  Range:  $y\ge2$  

• Domain: All Real Numbers
  Range:  $y\le2$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

What is the vertex of the parabola:
y = -12x + 22 + 2x²

• (3,4)
• (-3,4)
• (3, -4)
• (-3,-4)

Tags

CCSS.HSA.REI.B.4