An equation of the form y = m x + c where m and c are numbers, gives a straight line when values of x and corresponding values of y are plotted on a grid. A straight line is a linear graph. A ...

Learn how to draw and understand information presented by a line graph with this interactive guide by BBC Bitesize for KS2 pupils.

The representation of numbers in graphs should be proportional to the numbers themselves. Otherwise, they mislead or deceive. Examples of misleading graphs not drawn to scale and a figure with ...