411 REFERENCE · Wikibooks
IB Maths Studies/Geometry and Trigonometry
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Tips for drawing proper graphs in IB Math Studies:
Use pencil.
Draw the graph with the help of a ruler (no freehand).
Label your axes. Sometimes a simple x for horizontal axis and y for vertical will be OK. However, most of the problems that you get in Paper 2 will have a fixed scale given. Use, and label, the scale for maximum points.
Plot the points that the problem gives you exactly. Don't guess.