Linear Equations Worksheet With Answer Key. A worksheet, in the word’s original meaning, is usually a sheet of paper on which one performs work. It is a printed page a child completes with a writing instrument. No additional materials are needed. It’s”a sheet of paper where work schedules, working time, special instructions, etc. are recorded. A bit or scrap of paper about which problems, thoughts, or so on, are set down in tentative form.” In schooling, a worksheet could have concerns for students and areas to document answers. In accounting, a worksheet is, or has been, a sheet of ruled paper with rows and columns where an accountant could record data or perform calculations.