# Shared Flashcard Set

## Details

Algebra 2 + Trigonometry Midterm
Chapters 6-9
20
Mathematics
01/20/2011

Term
 Standard Form of : y= -2(x-3)(x+5)
Definition
 Multiply it out y= -2x2-4x+30
Term
 In Vertex Form How do you find it's vertex and intercepts? y= 2(x-3)2-8
Definition
 Vertex: (3, -8) Y-int: make x= 0 X-int: make y= 0
Term
 What does it mean when a quadratic equation doesn't factor?
Definition
 No nice x- intercepts.
Term
Definition
 -b  +/-  √b2- 4(a)(c) 2a
Term
 How do you change standard form to vertex form? y= -2x2+12x-15
Definition
 1. Find the Vertex (3,3) 2. y= a (x-3)2+3 3. Find "a" 4. a= 0 y=(x-3)2+3
Term
 When I square root both sides of an equation, I won't forget.....
Definition
 positives and Negatives!
Term
 Whats the name of each parabola form below? 1. y= ax2+bx+c 2. y= a(x-h)2+k 3. y= a(x-m)(x-n)
Definition
 1. standard 2. vertex 3. factored
Term
 Describe the significance of each pink part of the equation   y= 3(x+5)2-7
Definition
 y= 3(x+5)2-7 3= steep 5= left 5 -7= down 7
Term
Definition
 no x- int  (2 imaginary solutions)
Term
Definition
 1 solution
Term
Definition
 2 solutions
Term
 What is "i"
Definition
 √-1
Term
 What is i2
Definition
 -1
Term
 Simplify:   3i(2i-5)
Definition
 -6-15i
Term
 Simplify:   √-49
Definition
 7i
Term
 Simplify:   (2i-3)2
Definition
 5-12i
Term
 Simplify:   √150
Definition
 5√6
Term
 How would you find the vertex of: y= ax2+bx+c
Definition
 -b/2a
Term
 y- intercept of: ax2+bx+c
Definition
 make x=0 y-int is "c"
Term
 Whats the x-intercept of   ax2+bx+c?
Definition
 make y= 0   or factor or use the quadratic formula
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