Quadratic Functions Review (3.0)

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 y intercept for the equation:
y = -8x² + 3x - 7

• (0, -8)
• (0, 3)
• (0, 7)
• (0, -7)

Tags

CCSS.HSF-IF.C.7A

What is the line of symmetry for the following equation: $y=4x^2-8x+9$  

•  $x=-8$  

•  $x=1$  
  

•  $x=-1$  
  

•  $x=2$  

Find the vertex of $f\left(x\right)\ =\ -x^2-4x+12$  

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)

Find the axis of symmetry for $f\left(x\right)\ =\ x^2-8x+15$  

• x = - 4

• x = 4

• y = 4

• y = - 4

True or false:
The solution, root, x-intercept, and zero of a problem are all the same thing

• True
• False, because the solution and root are the same but the x-intercept and zero are different
• False, because the x-intercept and root are the same but the zero and solution are different
• False, they are all different

Tags

CCSS.HSF-IF.C.7A

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

Tags

CCSS.HSA-REI.B.4B

Solve by factoring or the Quadratic Formula:  $x^2+4x+3\ =\ 0$  

• x = 1 and x = 3

• x = 6 and x = -2

• x = -1 and x = -3

Tags

CCSS.HSA-REI.B.4B

The height of a water balloon that is launched into the air is given by h(t) = -5x² + 20x + 25. When will the balloon explode on the ground?

• 5 seconds

• 1 second

• 2 seconds

• 3 seconds

Solve for k.

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no real solution

Tags

CCSS.8.EE.A.2