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You are draining your fish aquarium that is full of water at the start. After two minutes, there are 6 gallons of water in the aquarium. After 5 minutes, the aquarium is empty.
A) Write an equation that represents the volume y (in gallons) of water in the aquarium after x minutes.
so after 2 minutes, 6 left and 5 minutes=0 left so if x=2 then y6 if x=5 then y=0 x is obviously negative y=-sometingx find slope (y1-y2)/(x1-x2) (6-0)/(2-5)=6/-3=-2
so y=-3x+b solve for b if y=0 then x=5 0=-3(5)+b 0=-15+b add 15 to both sides 15=b
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