Mathematics
starcastaneda31
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Which best describes the relationship between the successive terms in the sequence shown? 9, –1, –11, –21, … The common difference is –10. The common difference is 10. The common ratio is –9. The common ratio is 9.

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Carry751

9,   -1,   -11,   -21,…  -10   -10    -10 a(n) = a₁ + d(n - 1) a(n) = 9 - 10(n - 1) a(n) = 9 - 10(n) + 10(1) a(n) = 9 - 10n + 10 a(n) = -10n + 9 + 10 a(n) = -10n + 19 The common difference is -10.

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