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Quiz 8A: Graphing Quadratics and Solving by Factoring
  • 1. What is the vertex of y = x2 + 2x + 1?
A) (2, 9)
B) (1, 4)
C) (-1, 0)
D) (-2, 1)
  • 2. What is the vertex of y = 2x2 + 12x + 15?
A) (-6, 15)
B) (3, 69)
C) (6, 159)
D) (-3, -3)
  • 3. What is the vertex of y = 2x2 - 4x + 10?
A) (-1, 3)
B) (2, 1)
C) (-2, 17)
D) (1, 8)
  • 4. Determine where f(x) = x2 + 2x - 8 intersects the x-axis.
A) x = -4, 2
B) x = 4, 2
C) x = -4, -2
D) x = 4, -2
  • 5. Determine where f(x) = x2 + 7x + 12 intersects the x-axis.
A) x = 4, 3
B) x = -4, -3
C) x = -4, 3
D) x = 4, -3
  • 6. What are the solutions of x2 - 11x + 30 = 0?
A) x = 5, 6
B) x = -5, 6
C) x = 5, -6
D) x = -5, -6
  • 7. What are the solutions of x2 + 2x + 1 = 0?
A) x = -1
B) x = -1, 1
C) x = 1
D) x = 2
  • 8. Determine where f(x) = 2x2 + 2x - 40 intersects the x-axis.
A) x = 2, -10
B) x = -5, 4
C) x = 10, -2
D) x = -4, 5
  • 9. Determine where f(x) = 2x2 + 12x + 10 intersects the x-axis.
A) No solution
B) x = -5
C) x = -1, 5
D) x = -1, -5
  • 10.
A) C
B) D
C) B
D) A
  • 11. Which of the following terms is not used to describe the solutions to a quadratic equation?
A) the zero(s)
B) the x-intercept(s)
C) the root(s)
D) the y-intercept(s)
  • 12.
A) D
B) B
C) A
D) C
  • 13.
A) A
B) B
C) D
D) C
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