Inverse Variation
Direct Variation
100
The amount of time it takes to shovel a driveway varies inversely with the number of people shoveling. If it takes 2 people 3 hours to shovel a driveway, how long will it take 5 people?
1.2 hours
100
Pretend you are stuck inside your house due to the snow storm. In this case, you might say the value of a snow shovel varies directly with the amount of snow that is on the ground. If a snow shovel is worth $2 when there is 1 inch of snow on the ground, how much will a snow shovel be worth when there is 3 feet of snow on the ground?
$72
200
The amount of gas in your snowblower varies inversely with how long you've been using it. If you have one gallon of gas left after 35 minutes, how much gas would you have left if you used it for only 5 minutes?
5 gallons
200
Your speed skiing downhill varies directly with the steepness of a hill. If at 20deg, you ski 40mph, how fast will you ski at 65deg?
32.5 mph
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