3  variations - inverse variation may 12
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  • 1. Inverse Variation If 5 cats can catch 5 mice in 5 days, how many days does it  take 3 cats to catch 3 mice? 1
  • 2. If 5 cats can catch 5 mice in 5 days, how many mice can they  catch in one day?  Now, if 5 cats catch 1 mouse in 1 day, How many days would it  take 1 cat to catch 1 mouse? And finally, since 1 cat catches 1 mouse in 5 days, if you have  three times as cats, they'll catch three times as many mice in the  same amount of time.  So 3 cats catch ____ mice in 5 days. 2
  • 3. Inverse Variation As one quantity increases the other decreases. 3
  • 4. An experiment was conducted involving a cyclist, runner, jogger  and walker each completing a journey of 40 km. The results of the  experiment are recorded in the table shown below.  dep variable: ind variable: 4
  • 5. 5
  • 6. This is called an inverse variation The velocity varies inversely with time Where k is a constant of variation 6
  • 7. 7
  • 8. According to Ohm's Law, the current (A) flowing in a wire is  inveresely proportional to the resistance      of the wire. If the  current is 5 amperes when the resistance is 24 ohms, what is  the current when the resistance is 3 ohms?  8
  • 9. Assignment 3 Page VI­F­12 Questions 1 ­ 7 9