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Algebra 2 formulae
formulae for algebra 2
9
Mathematics
11th Grade
11/20/2009

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Cards

Term
What is the equation for a parabola?
Definition
y= ax2 + bx +c
Term
The equation for graphing a parabola
Definition
y-k = a(x-h)2
Term
The equation for graphing a circle
Definition
(x-h)2+(y-k)2=r2
Term
if, in a parabola, a<0
Definition
the parabola opens downward
Term
if, in a parabola, a>0
Definition
the parabola opens upward
Term
the equation for a circle with a vertex of 0,0
Definition
x2+y2=r2
Term
The equation for an ellipse that has a vertex at 0,0
Definition

x2 + y2 = 1

a2    b2

Term
The equation for an ellipse that does not have a center at 0,0
Definition

(x-h)2 + (y-k)2 = 1 (note the ADDITION)

  a2           b2

Term
The equation for a hyperbola
Definition

(x-h)- (y-k)2 = 1 (note the SUBTRACTION)

  a2           b2

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