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.

The two graphs, like a dot plot, have both an x- and y-axis. You can calculate the spread of the dots by subtracting the minimum value from the maximum value on the chart.

Learn how to plot coordinates and create straight line graphs to show the relationship between two variables. Also, plot graphs that contain a negative coefficient of x.