1Why does it take two numbers to describe a point, and why must they be in a fixed order?
2Explain how to plot the point (5, 3), and why you should always start from the origin.
3What is special about points of the form (a, 0) and (0, b)?
4A(2, 1), B(6, 1), C(6, 4), D(2, 4) are plotted and joined. Identify the shape and find its area and perimeter, explaining how the coordinates alone tell you.
5Why are coordinates described as a bridge between geometry and algebra?