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Algebra 2 Equations
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A
B
Direct variation
y = kx
Inverse variation
y = k/x
Joint variation
y = kxz
Equations of a circle
(x-h)^2 + (y-k)^2 = r^2 (h,k) = center
Exponential growth or decay
A = Pe^(rt)
Yearly, monthly, daily, growth or decay
A = P (1 = r/n) ^(nt)
Vertex form of quadratic equation
y = a(x-h)^2 = k
Standard form of quadratic equation
y = ax^2 + bx + c
Quadratic formula
-b +/- (square root of b^2 - 4ac) / 2a
Rebecca Rider-Yopp
NC
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