C.  Check Up


  1. The height of the water level in a rain barrel decreases as plants are watered. Sketch a graph to represent each of the following scenarios if the height of water in the barrel was initially 100 cm.

    1. a rate of change of -2 cm/min



    2. a rate of change of -10 cm/min



    3. a rate of change of -25 cm/min



  2. Pick one scenario from part 1 and answer the following questions.

    1. State two points on the graph of the chosen relation.



    2. Use those points to determine the slope of the relation.



    3. What are the units for the rise of the graph?



    4. What are the units for the run of the graph?



    5. Describe, in words, the rate of change of the relation.



    6. Would this data be considered continuous or discrete? Explain.



    7. State the domain and range of the relation.




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