1. Building Tables for Inverse Proportionality Slideshow 30, Mathematics Mr Richard Sasaki Room 307

2. OBJECTIVES COMPARING TABLES OF INVERSELY PROPORTIONAL VARIABLES STARTING TO SEE HOW GRAPHS IN THE FORM Y=K/X FORM

3. PROJECT A REMINDER ABOUT THE FOLLOWING DEADLINES… 7A – Thursday, 17 th October 7B – Thursday, 17 th October 7C – Thursday, 17 th October FEEL FREE TO HAND YOURS IN TODAY! ON THURSDAY, “I LEFT IT AT HOME” IS NOT AN EXCUSE.

4. PROPORTION “Hi, I am stupid! I know what direct proportion and inverse proportion are!” Right? No!!!

5. PROPORTION k > 0 Umm…It’s much more complicated. Please complete the worksheet investigating inverse proportion.

6. ANSWERS We’re interested in the relationships more than the numbers in the tables. It’s easier to say higher and lower than smaller and bigger. For k > 0… For k < 0…

7. ANSWERS For k > 0… For k < 0… The k parts are exactly the same, but this still might be hard to visualise. So let’s build a graph!

8. ANSWERS I really hope you got something like this! There’s nothing linear about that is there! Lastly, try the activote exercise!