I need help it’s easy i’m just dumb

What is the 12th term of b(n)=-4-2(n-1)

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ

Can someone me out here number 4 plz