Question

whats the following arithmetic sequences -4,2,0,-2
1)tn=4+2(n-1)
2)tn=2+4(n-1)
3)tn=1+4(n-2)
4)tn=4-2(n-1)

Answer 1

the arithmetic sequence is .....
4,2,0,-2.....

first term is 4
common difference is 2-4=-2
a=4
d=-2

in an arithmetic sequence
\[t_n=a+(n-1)d\]

=\[4+(n-1)(-2)\]
=4-2(n-1)