What should you look for to determine which method to use to solve a system of equations?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)