CCSS.Math.Content.HSA.REI.B.4

Solve for the values of x:
(x - 3)(x + 6) = 0

• { -3, -6 }
• { 3, -6 }
• { -3, -6 }
• { 3, 6 }

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve the equation using the quadratic formula.

• A
• B
• C
• D

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CCSS.Math.Content.HSA.REI.B.4

A ball is thrown into the air with an upward velocity of 100 ft/s. Its height, h, after t seconds is given by the function
 h = -16t² + 64t + 960.
When did the ball hit the ground?

• 10 seconds
• 2 seconds
• 5 seconds
• 7 seconds

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the Axis of Symmetry?

• x = -8
• x = -4
• x = 4
• x = -2

Tags

CCSS.Math.Content.HSA.REI.B.4

Identify a,b, and c based on the quadratic formula.
2x²-3x+24=0

• a=2, b=-3, c=24
• a=2, b=3, c=24
• a=2, b=-3,c=-24
• a=2, b=3, c=-24

Tags

CCSS.Math.Content.HSA.REI.B.4

On the domain [0, 2π), solve this equation 0 = sinx(sinx − 1)

• 0, π

• 0, π, ½π

• ½π

• 0, 90, 270

Tags

CCSS.Math.Content.HSA.REI.B.4

Determine the vertex of:

y = x² + 8x - 10

• (4,38)

• (-8,10)

• (-4,-26)

• (2,10)

Tags

CCSS.Math.Content.HSA.REI.B.4

 $x^2-6x+4=0$  

•  $3\pm\sqrt{5}$  

•  $\frac{6\pm\sqrt{20}}{2}$  

•  $3\pm\sqrt{20}$  

•  $3\pm i\sqrt{13}$  

Tags

CCSS.Math.Content.HSA.REI.B.4

Solve using the Quadratic Formula:
 $2x^2+6x-8=0$ 

•  $x=2\ or\ x=-8$  

•  $x=-1\ or\ x=4$  

•  $x=1\ or\ x=-4$  

• No real solutions

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CCSS.Math.Content.HSA.REI.B.4

 $x^2-4x-7=0$  
Which example below uses the quadratic formula  correctly? 

•  $x=\frac{-\left(4\right)\pm\sqrt{\left(-4\right)^2-4\left(1\right)\left(-7\right)}}{2\left(1\right)}$  

•  $x=\frac{-\left(-4\right)\pm\sqrt{\left(-4\right)^2-4\left(1\right)\left(-7\right)}}{2\left(1\right)}$  

•   $x=\frac{-\left(-4\right)\pm\sqrt{\left(-4\right)^2-4\left(1\right)\left(7\right)}}{2\left(1\right)}$  

Tags

CCSS.Math.Content.HSA.REI.B.4