8.1 - Parabolas

The parabola y = -2x² - 4x + 1 will open

• opens up

• opens down

Tags

CCSS.HSF-IF.C.7A

The parabola y = x² - 2x + 4 will

• open up

• open down

Tags

CCSS.HSF-IF.C.7A

The parabola y = x² - 2x + 4 will have a vertex of

• (-1, 2)

• (1, 2)

• (-1, 3)

• (1, 3)

The parabola y = - 2x² - 4x + 1 will have an axis of symmetry of

• x = - 1

• x = 1

• x = 4

• x = - 4

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

• (1, 3)

• (- 1, 3)

• (- 1, -5)

• (- 1, 5)

What is the vertex of y=x²+4x+3?

• (2,1)
• (-2,1)
• (0,0)
• (-2,-1)

A parabola has a vertex at (-3,2).
Where is the axis of symmetry?

• y = -3

• x = 3

• x = -3

• y = 3

Tags

CCSS.HSF-IF.C.7A

What is another name for the x-intercepts of a quadratic?

• y-intercept
• Zeros
• x-axis
• They don't have another name

What are the zeros for the function
f(x) = (x + 7)(x + 5)

• (7 , 0) and (5 , 0)
• (0 , 7) and (0 , 5)
• (-7 , 0) and (-5 , 0)
• (7 , 0) and (5 , 0)

Tags

CCSS.HSF-IF.C.7C

• 4 and -6

• -4 and 6

• 4 and 6

• -4 and -6

Tags

CCSS.HSF-IF.C.7A