Quadratic Review

Find the axis of symmetry and vertex. Use desmos graphing.
 $y=-x^2+10x-28$  

• 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)

Tags

CCSS.HSF-IF.C.7C

Solve Using the Quadratic Formula

x² + 4x - 32 = 0

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

Solve by taking square roots:

5b² = 45

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Find the zeros of the equation: 
(x+10)(x-2) = 0

• 10 and 2
• -2 and 10
• -10 and 2
• -2 and -10

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.APR.B.3

What is a, b, and c in 3x² -5x + 4 ?

• a = 3, b = -5, c = 4

• a = 3, b = 5, c = 4

• a = 3, b = 5, c = -4

• a = 3, b = -5, c = -4

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Tags

CCSS.HSA.REI.B.4

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Using Desmos graphing what is the axis of symmetry of y = 3x² - 6x + 4

• x=1

• x=-6

• x=2

• x=-1

Solve:

(x + 2)(x - 3) = 0

• { 2, 3 }

• { -2, -3 }

• { 2, 3 }

• { -2, 3 }

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1
• (x + 1)(x - 3); x=-1, x=3
• (x + 2)(x - 1); x=-2, x=1
• (x - 1)(x + 3); x=1, x=-3

Tags

CCSS.HSA-REI.B.4B