Quadratic Function Unit 6

Xavier found the roots of a quadratic function to be -5 and 2. Which could have been his function?

• f(x) = 6x² - 6x - 60

• f(x) = x² - 3x + 10

• f(x) = 2x² + 6x - 20

• f(x) = x² + 3x + 10

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

The graphs of f(x) = x² - 1 and g(x) = 2x + 5 intersect at approximately:

• (-1.65, 1.71) only

• (3.65, 12.29) only

• (-1.24, 2.53) and (3.24, 11.47)

• (-1.65, 1.71) and (3.65, 12.29)

Tags

CCSS.HSA.REI.C.7

If the zeros of a quadratic function, a(x), are 8 and -2, what is the equation of the axis of symmetry of a(x)?

• x = 3

• x = -3

• x = 6

• x = 10

Tags

CCSS.HSF-IF.C.7A

The height of a football thrown in the air can be modeled by the function h(t) = -4t² + 36t, where t represents the time in seconds since the ball was thrown. Over which interval is the ball's height increasing?

• 0 < t < 9

• 0 < t < 81

• 4.5 < t < 9

• 0 < t < 4.5

If the zeros of a quadratic function, a(x), are 8 and -2, what is the equation of the axis of symmetry of a(x)?

• x = 3

• x = -3

• x = 6

• x = 10

Identify the root(s) for the function: $f\left(x\right)=x^2-10x+25$  

•  $x=\pm5$  

•  $x=15\ and\ x=-10$ 

•  $x=-5\ and\ x=20$ 

•  $x=5$  

Which is a zero of the graph?

• (0, 0)

• (-1, 0)

• (0, -1)

• (0, 4)

Determine the zero(s) for the quadratic function: $f\left(x\right)=x^2+11x+24$  

•  $x=-8\ and\ x=3$  

•  $x=8\ and\ x=3$  

•  $x=-8\ and\ x=-3$ 

•  $x=8\ and\ x=-3$  

Name the Axis of Symmetry

• x = 1

• x = 0

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.10

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

• y = -2
• x = 3
• x = -3
• y = 2