Question

1. Find the first term a and common difference
for the following A.P.
(i) 6, 9, 12, 15, ...
(ii) -7, -9,- 11, -13.​

Answer 1

Answer:

Hloo.....

1.First term(a)=6

Common difference (d)=9-6=3

2.First term(a)=-7

Common difference (d)=-9-(-7)=-9+7=-2

Hope this helps you......

Answer 2

Answer:

(i) 9-6=3

12-9=3

15-12=3

therefore, common difference is 3

a=A2-d

=6-3

=3.

(ii) -9+7=-2

-11+9=-2

-13+11=-2

common difference= -2

a=A2-d

a=-7+2

=-5

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