A linear equation is drawn as a straight line on a set of axes. To draw the graph we need coordinates. We generate these coordinates by substituting values into the linear equation. STEP 1 - Draw ...

Günhan Caglayan, John Olive, Eighth grade students' representations of linear equations based on a cups and tiles model, Educational Studies in Mathematics, Vol. 74, No. 2 (June 2010), pp. 143-162 ...

Karina J. Wilkie, Students' use of variables and multiple representations in generalizing functional relationships prior to secondary school, Educational Studies in Mathematics, Vol. 93, No. 3 ...