A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. Find all solutions whenever they exist.x+3y=93x-y=7
which equation represents a line that is parallel to the line whose equation is 2x+3y=12?1. 6y-4x=22.6y+4x=23. 4x-6y=24. 6x+4y=-2