Pre-Cal/Trig 2.1, 2.2, 2.6, 3.1

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Author:
gurkem1
ID:
114337
Filename:
Pre-Cal/Trig 2.1, 2.2, 2.6, 3.1
Updated:
2011-11-03 21:12:56
Tags:
pre cal trig
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Description:
Sections 2.1, 2.2, 2.6, and 3.1 quiz
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  1. y=a(x-h)2+k
    find the vertex
    (h,k)
  2. x2+4x-6
    Complete the Square
    • x2+4x -6
    • x2+4x+4 -6-4
    • (x+2)2-10
  3. 2x2-12x+3
    Complete the Square
    • 2(x2-6x )+3
    • 2(x2-6x+9)+3-18
    • 2(x+3)2-15
  4. y=a(x-h)2+k
    What unit multiplies the y-values?
    The a-unit
  5. y=a(x-h)2+k
    What unit translates the graph horizontally?
    The h-unit
  6. y=a(x-h)2+k
    What unit translates the graph vertically?
    The k-unit
  7. f(x)=ax2+bx+c
    What's the vertex?
    (-b/2a , plug in the x)
  8. r= 100x-0.0002x2
    Find the maximum units
    • -100/2(-0.0002)
    • 250,000 units
  9. What does maximum or minimum mean?
    Find the vertex
  10. Positive leading coefficiant
    Even Degree
    • Up
    • Up
  11. Positive leading coefficient
    Odd Degree
    • Down
    • Up
  12. Negative leading coefficient
    Even Degree
    • Down
    • Down
  13. Negative leading coefficient
    Odd Degree
    • Up
    • Down
  14. Write Equation with the given 0's
    0,6
    y=x(x-6)
  15. Write Equation with the given 0's
    4, -5
    • (x-4)(x+5)
    • y=x2+x-20
  16. Write Equation with the given 0's
    2+/5, 2-/5

    *hint* think (a2-b2)
    • (x-2-/5)(x-2+/5) --------> (x-2)2-5
    • x2-4x+4-5
    • f(x)=x2-4x-1

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