Is this sequence arithmetic?

Question

Is the sequence A_n=4n-6 arithmetic?

yes or no?

is the answer is yes, 

the first term is?

the common difference is?

Answer 1

Dalia<

A_n = 4n-6, first term A₀=-6, common difference is A_n+1 - A_n =4(n+1)-6 -(4n-6)=4n+4-6-4n+6=4 so the common difference is 4.

 

Jim