8-2 Practice

What is the vertex?

• (4,-4)
• (2,0)
• (0,2)
• (6,0)

Identify the axis of symmetry. 

• x = -1

• y = -1

• x = 4

• y = 4

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Find the vertex of  y = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

Does this graph have a maximum or minimum value?

• maximum
• minimum
• neither
• both

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c = -3

• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

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

Hint!! look at the value of a. If a > 0, the graph opens upward. If a < 0, the graph opens downward.

• max
• min

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

Name the x-intercept(s)?

• (0, 0)
• (2, 4)
• (0, 0) and (0, 4)
• (0, 0) and (4, 0)

How many zeros does this parabola have? 

• 3
• 2
• 0
• 1