CHAPTER 10 REVIEW What is the equation of A.O.S. for y = x 2 – 12x – 7 ? x = 6 HINT: x = -b /...
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CHAPTER 10 REVIEW What is the equation of A.O.S. for y = x 2 – 12x – 7 ? x = 6 HINT: x = -b / 2a
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Transcript of CHAPTER 10 REVIEW What is the equation of A.O.S. for y = x 2 – 12x – 7 ? x = 6 HINT: x = -b /...
CHAPTER 10 REVIEW
What is the equation of A.O.S. for y = x2 – 12x – 7 ?
x = 6
HINT: x = -b/2a
CHAPTER 10 REVIEW
What is the vertex for the graph of y = x2 – 6x – 2 ?
(3, -11)
HINT: Find A.O.S. first
CHAPTER 10 REVIEW
Does the graph of y = -5x2 + 3x – 7 have a maximum or minimum?
MAXIMUM
HINT: a is negative
CHAPTER 10 REVIEW
What is the discriminant for x2 – 7x + 3 = 0
37
HINT: b2 – 4ac
CHAPTER 10 REVIEW
What is the discriminant for 2x2 – 5x + 7 = 0
-31
CHAPTER 10 REVIEW
What value of c will make x2 – 16x + c a PST?
64
HINT: half of b, square it
CHAPTER 10 REVIEW
What are the next three terms of 4, 8, 16, _____ ?
32, 64, 128
HINT: What is the common ratio?
CHAPTER 10 REVIEW
What are the next three terms of -4, 10, -25,
_____ ?
62.5, -156.25, 390.625
HINT: What is the common ratio?
CHAPTER 10 REVIEW
If a quadratic equation has a discriminant of 32, how many
solutions does the equation have?
2 real solutions
HINT: The discriminant is positive
CHAPTER 10 REVIEW
If a quadratic equation has a discriminant of 0, how many solutions
does the equation have?
1 real solution
HINT: Double root
CHAPTER 10 REVIEW
If a quadratic equation has a discriminant of -11, how many
solutions does the equation have?
No real solutions
HINT: Square root of a negative??
CHAPTER 10 REVIEW
Find the geometric mean of 3 and 12.
±6
HINT: Square root of the product
CHAPTER 10 REVIEW
Find the geometric mean of 5 and 30.Nearest hundredth.
150
±12.25
CHAPTER 10 REVIEW
Use your calculator to find 31.7 to the nearest hundreth.
6.47
HINT: Use the power button
CHAPTER 10 REVIEW
What are the zeros (or roots, or solutions) for the quadratic function
graphed at right?
{-1, 2}
HINT: x-axis
MID-CHAPTER 10 REVIEW
Solve by completing the square: x2 – 2x – 5 = 0
Answer to the nearest tenth.
61x = 3.4 or x = -1.4
MID-CHAPTER 10 REVIEW
Solve using the Quadratic Formula: x2 – 3x – 9 = 0
Answer to the nearest tenth.
2
453
x = 4.9 or x = -1.9
MID-CHAPTER 10 REVIEW
Solve: (x – 5)2 = 23Answer to the nearest tenth.
235
x = 9.8 or x = 0.2
