SOLUTION: The water level of a river is 34 feet and it is receding at a rate of 0.5 foot per day. Write an equation that represents the water level after x number of days. Identify the slope

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The water level of a river is 34 feet and it is receding at a rate of 0.5 foot per day. Write an equation that represents the water level after x number of days. Identify the slope      Log On


   

Question 936517: The water level of a river is 34 feet and it is receding at a rate of 0.5 foot per day. Write an equation that represents the water level after x number of days. Identify the slope and y-intercept, and describe their meanings. In how many days will the water level be 26 feet?
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
y = -0.5x + 34
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slope = -0.5
it's the rate at which the river level is decreasing in feet/day
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y-intercept = 34
it's the current river level in feet
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number of days when the water level will be at 26 feet:
26 = -0.5x + 34
0.5x = 34 - 26
x = (34 - 26)/0.5
x = 16
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