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Algebra 2 Review

Alg. 2 Review Formulas and stuff

QuestionAnswer
Direct Variation y=kx
Inverse Variation y=k/x x cannot = 0
Joint Variation y=kxz
Rule for nth term of arithmetic sequence a(sub)n=a(sub)1+(n-1)d
Sum for an arithmetic sequence S(sub)n=n(a(sub)1+a(sub)n/2)
nth term of a geometric sequence a(sub)n=a(sub)1 times r^n-1
sum of 1st n terms of geometric series s(sub)n=a(sub)1(1-r^n/1-r)
sum of infinite geometric series s=a(sub)1/1-r
Created by: MelonnnnnLN
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