Quadratic Functions

Which letter determines if a parabola opens up or down?

• a

• h

• k

Tags

CCSS.HSF-IF.C.7A

The equation for the axis of symmetry line is x = -b/(2a)

• true

• false

The turning point of the parabola is called the _________?

The equation 4x² – 8x – 5 = 0 has __________ .

• two real solutions

• only one real solution

• no real solution

Tags

CCSS.HSA-REI.B.4B

The solution set of 2x² + 8x + 8 > 0 is _________ .

• ∅

• R \ {– 2}

• {– 2}

• R

The solution set of 2x² + 8x + 8 ≤ 0 is ___________ .

• ∅

• R \ {– 2}

• {– 2}

• R

The solution set of 2x² + 8x + 8 ≥ 0 is _________ .

• ∅

• R \ {– 2}

• {– 2}

• R

Complete the square in each of the following. x² – 6x + 9 = 0 = (x – ____ )²

• 3

• 6

• 9

• 2

Tags

CCSS.HSA-REI.B.4B

Complete the square in each of the following. n² – 0.6n + 0.09 = (n – ____ )²

• 0.4

• 0.6

• 0.9

• 0.3

Tags

CCSS.HSA-REI.B.4B

The equation x² + 4x + 4 = 0 has ___________ .

• two real solutions

• only one real solution

• no real solution

Tags

CCSS.HSA-REI.B.4B