Question

General term for -13, -11, -9, -7

Answer 1

The general term for the arithmetic sequence; -13, -11, -9, -7 is Tn = -15 - 2n.

Arithmetic progression

-13, -11, -9, -7

• First term, a = -13
• Second term = -11

Common difference, d = Second term - first term

= -11 - (-13)

= -11 + 13

= 2

Therefore,

Tn = a + (n - 1)d

Where,

• n = number of terms

Tn = a + (n - 1)d

= -13 + (n - 1)2

= -13 - 2n - 2

Tn = -15 - 2n

So therefore, the general term for the arithmetic sequence; -13, -11, -9, -7 is Tn = -15 - 2n.

Learn more about arithmetic progression:

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