STEP - BY - STEP EXPLANATION
What to find?
Determine if the given series is;
Geometric or arithmetic?
Finite or infinite.
Given:
-1+0+1+2+3+4+5+6+7+8
Observe from the above that ;
first term =-1=a
Common difference (d) = 2-1 = 1
Since what we have is a common difference and not a common ratio, then the series is an arithmetic series.
Also, observe that , the series keeps increasing by 1. Hence, it is an infinite series.
ANSWER
arithmetic
infinite