Unit 8B Review Quadratics

What is the equation for axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Does this parabola have a minimum or maximum and what is its value?

• minimum: 2
• maximum: 2
• minimum: 5
• maximum: 5

What are the x- intercepts?

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

What is the vertex of the quadratic function:
y = x² - 6x + 11?

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

How many solutions are there if the discriminant is positive.

• 0
• 1
• 2
• Infinite

How many solutions will the function have?
x² - 6x + 9 = 0

• Two Solutions
• One Solution
• No Real Solutions
• One Million Solutions!!!

A ball is thrown into the air with an upward velocity of 64 feet per second. Its height, h, after t seconds is given by the function
 h = -16t² + 64t + 960
When did the ball hit the ground?

• 10 seconds
• 2 seconds
• 5 seconds
• 7 seconds

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Which equation below is a quadratic?

• y=9x+5
• y=3x²-6
• y=5
• x=10

What is the y-intercept of the graph of y=5x² + 4x - 1 ?

• (1, 0)
• (0, 1)
• (-1, 0)
• (0, -1)