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

Convert x²-6x+9 to factored form and identify the solution.

• (x-3)(x-3); x=3
• (x+3)(x+3); x=-3
• (x+4)(x+2); x=-4, -2
• Not factorable

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

What is the axis of symmetry?

• x = - 4
• x = - 2
• x = 0
• x = 4

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

Solve by factoring.
z² - 18z + 81 = 0

• z = 9
• z = -9
• z = 9 or z = -9

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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.
What is the maximum height?

• 960 feet
• 1008 feet
• 1024 feet
• 1152 feet

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

A brick falls from the top of a building.  The equation h=-16t² - 21t + 200 represents the height of the brick h in feet after t seconds.  How long will it take the brick to reach the ground? Round your answer to the nearest tenth as needed.)

• 2.8
• 2.9
• 3.0
• 0 

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

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

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

Solve using Zero-Product Property.
(2x-2)(5x-5) = 0

• x = -1
• x = -1 or x = 1
• x = 1

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

You jump off a 24 foot high cliff and your fall is modeled by the function:

h(t) = -16t² + 8t + 24

When would you reach 16 feet above the water?

• 8 seconds

• 1 second

• 1/2 second

• 1/4 second

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

What is the maximum height of the parabola?

• h = 0.563

• h = 10.063

• h = 5

• h = 1.356

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

Solve.

x² + 3x - 4 = 0

• x = 2, x = 2

• x = 1, x = 4

• x = 1, x = -4

• No Real Number Solutions

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