Translate between the recursive and explicit definitions for each sequence.
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an = −2 + 7(n − 1)

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step1 Distribute

-2+7(n-1

-2+7n-7

step2 subtract the numbers

-2+7n-7

-9+7n

step3 rearrange terms

-9+7n

7n-9

=7n-9

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.