Answer
$a_1= -2, a_2= -6, a_3= -10, a_4= -14, a_5= -18$, arithmetic.
Work Step by Step
1. Given $a_n=-4n+2$, we have: $a_1=-4(1)+2=-2, a_2=-4(2)+2=-6, a_3=-4(3)+2=-10, a_4=-4(4)+2=-14, a_5=-4(5)+2=-18$
2. We can identify the sequence as arithmetic.