Quadratic Functions Review 2

What is the green dot on the parabola called?

• maximum
• minumum
• roots
• zeros

Tags

CCSS.HSF-IF.C.7A

The solutions of a quadratic equation are known as the _____.

• Zeros

• Solutions

• X-intercepts

• All of these are correct

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 are the steps to solve the word problem: How long will it take to reach the maximum height if you jump from a cliff with the formula: h=-16t^2_ + 8t +24?

• Calculate the Axis of Symmetry as 1/2, plug 1/2 into the equation for t

• Calculate the axis of symmetry using the formula -b/2a

• Calculate the Axis of Symmetry as 1/4, plug 1/4 into the equation for t

• Factor out -8, then factor the remaining equation, then switch the signs or use Quad Formula

What is the formula for solving for the Axis of Symmetry?

• b²-4ac
• -b(+ -) Sq Root of b²-4ac/ 2a
• b/2a
• -b/2a

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

Tags

CCSS.HSF-IF.C.7A

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

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

• y = -2
• x = 3
• x = -3
• y = 2

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