In this section we are going to look at using cartesian geometry to tackle real life problems. Typically we will represent one variable on the x-axis and another variable on the y-axis and then use the graph to relate the two variables. This is equivalent in algebra to letting x represent one variable and y represent another variable and then using equations to relate the two variables.

Examples

Exercise

Let’s complete exercise 11B from pages 162 to 163 of the textbook:

The answers are below: