The farther the car goes, the more gas it uses. Makes sense -- until you try to do the math! Helping your students represent everyday actions mathematically, this book supports the NCTM's call for a more visual approach to learning algebra. These supplementary exercises develop an understanding of relations and functions in the real world by asking the student to picture a visual image (a graph) of the situation before tackling the equation -- an approach that benefits students who have difficulty with the abstract nature of algebra