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

Suppose that the equation V = 20.8x² – 458.3x + 3,500 represents the value of a car from 1964 to 2002. What year did the car have the least value? (x = 0 in 1964) 

• 1965
• 1970
• 1975
• 1980

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

Solve      3x² - 192 = 0

• -32 or 32
• No Solution
• -8 or 8
• -64 or 64

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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

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

What are the X-Intercepts, Roots, Zeros, and Solutions?

• {0, -8}
• {8, 0}
• {4, -4}
• {-4, -4}

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

What is the vertex of y= x² - 8x + 14 ?

• (2, 4)
• (-4, -2)
• (4, -2)
• (-2, 4)

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

If the graph of a quadratic does not intercept the x-axis at any point, then it has:

• 1 Real Solution
• 2 Real Solutions
• Half a Solution
• No Real Solution

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

What method works 100% of the time? 

• Greatest Common Factor (GCF)
• Quadratic Formula
• Factoring
• Square Root Method

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

What are the roots of the function?

• x = 4, -1

• (-4, 1)

• x = -4, 1

• (4, 0) (-1, 0)

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

Solve using the Quadratic Formula:

 $2x^2-x-3=0$  

•  $x=-\frac{3}{2},\ 1$  

•  $x=-1,\ \frac{3}{2}$  

•  $x=-\frac{3}{2},\ -1$  

•  $x=1,\ \frac{3}{2}$  

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

How many x-intercepts does this parabola have?

• 2 solutions

• 1 solution

• no solution

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