Linear Equations in Two Variables
A linear equation in 2 variables is a straight line on a graph. A system of 2 Linear equations in 2 variables –A1x + B1y = C1A2x + B2y = C2The 2 lines will be parallel to each other if (A1 * B2) – (B1 * A2) = 0 If (A1 * B2) – (B1 …