Test Part I Characteristic,Discriminant, Quadratic formula

Which coordinates best represent the vertex of the graph?

• (3, 0)

• (1, 0)

• (2, 1)

• (0, -3)

Tags

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

Which equation best represents the axis of symmetry?

• y= 6

• x = 2

• y = 4

• x = 0

Which graph best represents a quadratic function that has two solutions?

• A

• B

• C

• D

Does this parabola have a maximum or minimum?
REMEMBER MAXIMUM IS THE HIGHEST AND MINIMUM IS THE LOWEST. 

• Maximum
• Minimum

Does the following quadratic equation have a maximum or minimum value? How can you tell?
y=x²+2x-3

• Minimum value, because the a value is positive
• Maximum value, because the b value is positive
• Maximum value, because the a value is positive
• Minimum value, because the c value is negative

What is the arrow pointing at? How can you use this value?

• The arrow is pointing at the y-intercept. The x-value is the axis of symmetry and the y-value of this point is equivalent to the maximum/minimum 
• The arrow is pointing at the vertex. The x value of this point is equivalent to the maximum/minimum and the y-value is the axis of symmetry
• The arrow is pointing at the solution. The y value of this point is equivalent to the maximum and the x value is equivalent to the minimum
• The arrow is pointing at the vertex. The x-value is the axis of symmetry and the y-value is equivalent to the minimum/maximum

Identify the 'b' value: y = 16x² -8x -24

• 16

• -8

• 8

• -24

What is the axis of symmetry of:y=2x²-4x+9

• x = 1
• x = -1
• x = -2
• x = 4

What are the green dots called?

• axis of symmetry
• vertex
• parabola
• roots or x-intercepts

A baseball that is thrown upward at an initial velocity of 62 feet per second from a height of 4 feet creates a parabola that can be modeled by the function h = -16t²+ 62t + 4, where t is the time in seconds and h is the height of the baseball in feet. At how many seconds does the baseball reach a height of 56 feet in the air?

• about 1.23 seconds and about 3.38 seconds 
• about 0.62 seconds and about 3.38 seconds 
• about 1.23 seconds and about 2.65 seconds 
• about 0.62 seconds and about 2.65seconds