Assignment: Direct Variation
this investigation you are going to find the constant flow rate of different
faucets around your house. You will use this rate to determine how quickly your
faucets can fill up other containers.
two faucets in your house to use for this investigation such as the kitchen
sink, bathroom sink, bathtub, or garden hose.
Faucet 1 Description:
Faucet 2 Description:
the time it takes each faucet to fill to a certain volume.
Turn on your faucet and allow the
water to run.
Once the water is flowing at a constant
speed, place an empty 1-gallon milk jug under it.
With a stop watch, time how long
it takes for the gallon jug to fill up. This time is the number of seconds
it takes for a gallon of water to flow from your faucet.
Number of seconds to
fill a 1-gallon container from faucet 1 ___________
Number of seconds to
fill a 1-gallon container from faucet 2 ___________
the unit rate of each faucet in gallons per second and in seconds per gallon.
Faucet 1 rate: r =
Faucet 2 rate: r =
use the rates and/or equations to fill in the table with how much time it will
take your faucet to fill the following containers:
Container to be
Time for Faucet 1
Container to be filled
Time for Faucet 2
an equation for each faucet representing the relationship between x, the gallons to be filled in the
container and y, the time it takes to
fill the container.
Faucet 1: y = ____ x
Faucet 2: y = ____ x
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