Card 6: Drawing graph.

## Drawing Graph

Graphs are used to make a relationship between variables.
Gradient value and extrapolation of a graph are used to analyse a graph.

A well-plotted must contain the following features:

- A title to show the two variables under investigation,
- two axes labelled with the correct variables and their respective units,
- the graph drawn is greater than 50 % of the graph paper,
- appropriate scales (1:1 x 10x, 1:2 x 10x and 1:5 x 10x)
- all the points are correctly plotted,
- a best fit line is drawn