You guys can have free points if u need them

Which is an equation for the nth terms of the sequence 12,15,18,21

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

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10