Yes I know drawing graphs is a pain in the butt - but they tell you useful things AND you get lots of marks for good ones!
Key Features of Good Graphs
It is a line graph
The independent variable is along the bottom (X-axis)
The dependent variable is vertical (Y-axis)
The axes have good scales
Lines of best fit have been used
The graph has a title, labelled axes and a key if appropriate
Here are two graphs, the one on the left is a good one - see if you can find the errors in the other one - there are at least 7 things wrong!