Unit 4 Test - Quadratic Functions and Their Algebra

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

• (3,2)
• (-3,-2)
• (-3,2)
• (3,-2)

Does
y = -4x²
have a maximum or minimum value?

• maximum
• minimum

Tags

CCSS.HSF-IF.C.7A

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum
• opens up with a minimum
• opens down with a maximum
• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

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

• x=-8
• x=1
• x=-1
• x=2

What are the zeros of the function, f(x) = x² - 5x - 6?

• {-2, 3}

• {-3, -2}

• {-6, 1}

• {-1, 6}

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve
x² + 13x + 12 = 0

• x = -1, x = -12
• x = -1, x = -24
• x = -2, x = -6
• x = -2, x = -12

Tags

CCSS.HSA-REI.B.4B

Solve    2x² + 7x - 15 = 0

• -1.5 or 5
• No Solution
• -5 or 1.5
• 0.7 or 5

Tags

CCSS.HSA-REI.B.4B

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSF-IF.C.7A

How many solutions does this graph have?

• one
• two
• no solutions
• cannot be determined

Using the equation y = ax² + bx + c to represent a parabola on a graph, which statement is true?

• If b is negative, the parabola opens downward.

• If a is negative, the parabola opens upward.

• If a is positive, the parabola opens upward.

• If c is negative, the parabola opens downward.

Tags

CCSS.HSF-IF.C.7A