If we plot values of \(x\) and \(y\) of a particular function, we get graph of the function or we can say that graph is the locus of a point \(P(x, y)\), where \(P\) is a point on the function. To plot a graph we do not need to calculate all the points on the graph. By merely checking symmetry and nature of the graph, it can be plotted. First we will discuss symmetry.