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

Find the vertex of the quadratic:
y = -2x² + 4x + 3

• (0, 3)
• (-1, 5)
• (1, 5)
• (1, -5)

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

Solve by taking square roots:
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

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

What is the approximate side length of a square that has an area of 40?

• 20
• 10
• 1600
• 6.3

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

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Tags

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

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

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

Tags

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

Can this quadratic be solved by BOTH square root method AND difference of squares?
16x² - 25 = 0

• Yes!
• No - just square root method
• No - just difference of squares method

Tags

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

What is the minimum value of the quadratic function

f(x) = x² - 2x + 7

• 6

• 7

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

The graph of y = x² - 2x - 8 is shown.
What are the solutions to x² - 2x - 8 = 0?

• x = 1 and x = -9
• x = 0 and x = -8
• x = -2 and x = 4
• x = -4 and x = 2

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

Solve: x² - 6x + 5 = 0

• -3 and -2

• -6 and 1

• 5 and 1

• -1 and -5

Tags

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