Some important points to revise from the chapter are ... such that a and b are not both zero, is called a linear equation in two variables. • A linear equation in two variables has infinitely ...

2. Graphical Method: The graph of a pair of linear equations in two variables is represented by two lines. (i) If the lines intersect at a point, then that point gives the unique solution of the ...

Plot points with coordinates where ... and read the value on the \(x\)-axis. A linear graph could be used when exchanging euros into pounds, two different types of currency.