Key Characteristics of Parabolas

Which of the following parabolas open up? Select all that apply.

• y = 8x - 4x²+ 3

• y = 2x² - 4x + 1

• y = 2x² + 12x - 5

• y = 1 + 4x + 3x²

• y = 8x + 2x²

Tags

CCSS.HSF-IF.C.7A

Which graph is a parabola?

• 
• 
• 
• 

Tags

CCSS.HSF-IF.C.7A

How can you tell whether a parabola is facing up or facing down by looking at the equation?

• The vertex tells you the direction of the opening

• The value of "a" tells you the direction of the opening.

• All parabolas open upward

• All parabolas open downward

Tags

CCSS.HSF-IF.C.7A

• up

• down

• left

• right

Tags

CCSS.HSF-IF.C.7A

Label the key parts of the parabola.

d

c

b

a

Negative Zero

Positive Zero

Vertex

Y-intercept

Tags

CCSS.HSF-IF.C.7A

Label the key features of the parabola.

a

b

c

root

vertex

y-intercept

Label the key features of the parabola.

c

b

a

vertex

x-intercept

y-intercept

Label the key features of the parabola.

a

b

c

d

y-intercept

Vertex

x-intercepts(roots or zeros)

Axis of symmetry

When did the ball reach its maximum height? Choose the key feature and the answer.

• y-intercept, 3 secs

• x-value of the vertex, 4 secs

• y-value of the vertex, 5 secs

• y-intercept, 0 secs

Label the parabola using the following terms:

a

b

c

y-intercept

Vertex

x-intercept

Tags

CCSS.HSF-IF.C.7A