Analyzing Graphs - Water Usage During a Typical Day at School
Videos to help Algebra I students
develop the tools necessary to discern units for quantities in real-world situations and choose levels
of accuracy appropriate to limitations on measurement. They refine their skills in interpreting the meaning of
features appearing in graphs.
New York State Common Core Math Module 1, Algebra I, Lesson 4
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Common Core For Algebra I
Suppose the researchers collecting data for water consumption during a typical school day collected data through the night too.
a. For the period between the time the last person leaves the building for the evening and the time of the arrival of the first person the next morning, how should the graph of water consumption appear?
b. Suppose the researchers see instead, from the time 1.21 a.m. onwards, the graph shows a horizontal line of constant value, 4. What might have happened during the night?