Quadratics Quiz

What are the intervals of increase and decrease

• Interval of increase:  ( - infinity, 2)

  Interval of decrease:  (2, + infinity)

• Interval of increase:  ( - infinity, 24)

  Interval of decrease:  (24, + infinity)

• Interval of increase: (2, + infinity)

  Interval of decrease:   ( - infinity, 2)

• Interval of increase:  (24, + infinity)

  Interval of decrease:  ( - infinity, 24)

Tags

CCSS.HSA.REI.D.10

What are the intervals of increase and decrease?

• Interval of increase:  ( - Infinity, 0)

  Interval of decrease:  ( 0, + Infinity)

• Interval of increase:  ( - Infinity, -9)

  Interval of decrease:  ( -9, + Infinity)

• Interval of increase:  ( 0, + Infinity)

  Interval of decrease:  ( - Infinity, 0)

• Interval of increase:  ( -9, + Infinity)

  Interval of decrease:  ( - Infinity, -9)

Tags

CCSS.HSA.REI.D.10

What are the intervals of increase and decrease?

• Interval of increase:  ( 2, + Inifinity)

  Interval of decrease: ( - Infinity, 2)

• Interval of increase:  ( 0, + Inifinity)

  Interval of decrease: ( - Infinity, 0)

• Interval of increase:  ( - Infinity, 2)

  Interval of decrease: ( 2, + Inifinity)

• Interval of increase:  ( - Infinity, 0)

  Interval of decrease: ( 0, + Inifinity)

Tags

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Determine the x - intercepts:

f(x) = (x - 4)(x - 12)

• (12 , 0) and (4 , 0)

• (-12 , 0) and (-4 , 0)

• (0 , 12) and (0 , 4)

• (0 , -12) and (0 , -4)

Determine the x - intercepts:

f(x) = (x + 11)(x - 16)

• (0 , -11) and (0 , 16)

• (0 , 11) and (0 , -16)

• (11 , 0) and (-16 , 0)

• (-11 , 0) and (16 , 0)

Determine the x - intercepts:

f(x) = 4(x - 1)(x - 9)

• (1 , 0) and (9 , 0)

• (4 , 0) and (36 , 0)

• (0 , 4) and (0 , 36)

• (0 , 1) and (0 , 9)

Determine the axis of symmetry of the parabola with two symmetric points ( -4 , 8) and ( 2 , 8)

• x = 1

• x = 2

• x = -1

• x = 0

Determine the axis of symmetry of the parabola with x intercepts ( -5, 0) and ( 7 , 0)

• x = 1

• x = 0

• x = -1

• x = 2

Write a quadratic function that represents a parabola that opens downward and has -intercepts (-5 , 0) and (1 , 0).

• y = (x + 5)(x - 1)

• y = (x - 5)(x - 1)

• y = - (x + 5)(x - 1)

• y = - (x - 5)(x - 1)

Write a quadratic function that represents a parabola that opens upward and has -intercepts (12 , 0) and (4 , 0).

• y = (x - 12)(x - 4)

• y = (x + 12)(x + 4)

• y = - (x - 12)(x - 4)

• y = - (x + 12)(x + 4)