Is the sequence An=4n-6 arithmetic?
yes or no?
is the answer is yes,
the first term is?
the common difference is?
Dalia<
An = 4n-6, first term A0=-6, common difference is An+1 - An =4(n+1)-6 -(4n-6)=4n+4-6-4n+6=4 so the common difference is 4.
Jim