8.3 Practice

• a= 1, b= 2, c= -9

• a= 2, b= -1, c= 9

• a= -9, b= 2, c= -1

• a= -1, b= 2, c= -9

The axis of symmetry line passes through which point?

• y-intercept
• any random point
• vertex
• symmetrical point for the vertex

Which of the following parabolas will have a minimum?

• y = -x² + 4
• y = -x² + x - 3
• y = -x² - 2
• y = x² + 2x - 8

• 0
• 2
• -4
• 4

• 
• 
• 
• 

Find the y-intercept y = x² - 6x + 5

• (0, 8)

• (0, - 6)

• (5, 0)

• (0, 5)

Does the equation have a max or min? y = -2x² + 7x + 5

• max

• min

What's the axis of symmetry of y = 3x² - 6x + 4

• x=1
• x=-6
• x=2
• x=-1

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

• y = -2
• x = 3
• x = -3
• y = 2

What is the axis of symmetry for the following equation?
y=4x²-8x+9

• x=-8
• x=1
• x=-1
• x=2