What is an easy way to solve mixture word problems

Which is a graph of a proportional relationship?

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.