Parabolas Vertex Form

The parabola y = 3(x + 1)² + 3 will

• open up

• open down

Tags

CCSS.HSF-IF.C.7A

What is the axis of symmetry

• x = - 1

• x = 1

• x = 3

• x = 0

The parabola y = 1/2 (x + 4)² - 3 will

• open down

• open up

Tags

CCSS.HSF-IF.C.7A

The vertex of parabola y = - 2x² - 4x + 1 is

• (1, 3)

• (- 1, 3)

• (- 1, -5)

• (- 1, 5)

Explain the transformation

y= - ( x-1) ² +11

• right 1 , up 11

• reflected, right 1, down 11

• reflected, right 1, up 11

• left 1, up 11

in the formula y= a(x-h)² +k the -h does what to the parabola ?

• Moves it horizontally - right or left

• Moves it opposite direction - horizontally Right or Left

• moves it vertically

• Makes it wider ( shrink)

in the formula y= a(x-h)² +k the +k does what to the parabola ?

• moves it opposite Up - or Down +

• Moves it up + if positive or Down - if negative

• moves it right or left opposite

• makes it thinner ( stretched)

The equation of red graph is y = x². The equation of the blue graph is...

• y = -(x + 4)² + 2

• y = (x + 4)² - 2

• y = (x - 4)² - 2

• y = (x + 4)² + 2

Explain the transformation

y= 4 ( x+ 5) ² +3

• Wider, right 5, up 3

• Thinner, left 5, up 3

• thinner, right 5 up 3

• wider, left 5, up 3

What is the vertex of this quadratic equation?

y = 2(x + 2)² + 5

• (-2,5)

• (2,5)

• (5,-2)

• (-5,-2)