Quadratic review

No Calculator: Find the axis of symmetry and vertex.
 $y=-x^2+10x-28$  

• Axis of Symmetry: x = 10
  Vertex: (10, -28)

• Axis of Symmetry: x = 5
  Vertex: (5, -3)

• Axis of Symmetry: x = -5
  Vertex: (-5, -103)

• Axis of Symmetry: x = 5
  Vertex: (5, 47)

Name the zeros?

• (0,0) only

• (4,0) only

• both (2,4) and (4,0)

• both (0,0) and (4,0)

Name the zeros.

• (0,5)

• (-2,1)

• The origin

• No Solutions

Give the domain and range for the graph shown.

• D: all real numbers
  R: y $\ge$   -4

• D: all real numbers
  R: y $\le$   -4

• D: -2 $\le$   x $\le$   4
  R: y $\ge$   -4

• D: -2 $\le$   x $\le$   4
  R: y $\ge$   -4

No Calculator: Solve by factoring
 $x^2-7x=44$  

• x=-11, x=4

• x=-7, x-44

• x=11, x=-4

• no solutions

No calculator: Solve by factoring.
 $25x^2+1=5$  

• x=1, x=5

•  $x=-\frac{2}{5}$  ,  $x=\frac{2}{5}$  

• x=-4, x=25

• unfactorable

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

The length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions.

• 7 feet by 2 feet

• -7 feet by 12 feet

• 5 feet by 1 foot

• 12 feet by 7 feet

Your nephew is standing on his deck, which is 4 feet off the ground. He tosses his toy up into the air. The equation

h = -2t² + 7t + 4 models the toy's height, h, from the ground at t seconds after he threw it. How high is the toy after 1 second?

• 2

• 4

• 9

• 10

• 15

Tags

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Fireworks are fired from the roof of a 100-foot building. The equation h = -16t² +84t + 100 models the height, h, of the fireworks at any given time, t. How high do the fireworks get?

• 2.625

• 6.25

• 100

• 200

• 210.25

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1