## Saturday, 19 July 2014

### Taking a closer look at Direct & Inverse Proportions

From the two lessons, we learnt how the equations look like for direct and inverse proportion, i.e. the position of the term on the right.

Here are the 2 groups of equations:
Group 1: Equations that demonstrate direct proportion
Group 2: Equations that demonstrate inverse proportion

Direct Proportion (Group 1)
Enter the equations, one at a time into grapher and observe the lines.
If you examine the graphs in this group carefully, what are the common characteristics that you notice about the lines?

Inverse Proportion (Group 2)
Enter the equations, one at a time into grapher and observe the lines.
Why do the graphs behave in this manner?
Clue: It has something to do with the position of the x term.

If you examine the graphs in this group carefully, what are the common characteristics that you notice about the lines?

Point to Ponder:
Compare the 2 groups of graphs, what are the common characteristics?