If you are dealing with data involving comparative analysis of values spread across 2 different columns, try using the Line Chart or the Scatter Plot Graph. The procedure to create a line chart ...

Example Draw the graph of \ (y = 3x - 1\). If you recognise this as a straight line then just choose two ‘easy’ values of \ (x\), work out the corresponding values of \ (y\) and plot those points.

Revise how to plot a linear equation graph. Learn how to read x and y coordinates from a graph in this BBC Bitesize maths KS3 guide.