15x + 9 = 3(2x - 6) PLease Help me Ive benn stuck on this

The perimeter of a rhombus with a side of 6 is 24

Which of the following of the following sets of side lengths could not form a triangle?

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