2nd Partial

2nd Partial

1. Complex Numbers

   • Imaginary
   • a+bi

2. Quadratic Functions

   • General
     • y=ax2+bx+c
   • Standard
     • y=a(x-h)^2+k
       • a = reflection over the x-axis
       • h = x of vertex
       • k = y of vertex
   • Concavity
     • + Open up
     • - open down
   • Vertex
     • (-b/2a , f(-b/2a)
   • Axis of Symmetry
     • x=x of the vertex
   • Roots
     • Points that pass the x-axis
   • y-intercept
     • When x=0

3. Equations from root

   • y = a (x +/- root1) (x +/- root2)

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