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 ...

Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b. Linear functions are widely used in economics, physics, finance, and data ...

Susan E. B. Pirie, Lyndon Martin, The Equation, the Whole Equation and Nothing but the Equation! One Approach to the Teaching of Linear Equations, Educational Studies in Mathematics, Vol. 34, No. 2 ...

Solving equations with light. (Courtesy: iStockphoto/Henrik Jonsson) 3 x + y = 2 x + 3 y = 0 It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but ...