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Key Concepts Quiz 2.5
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Use the document below to help answer the questions:


1
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Desmond runs a scuba rental shop. He recorded data on the air consumed during a 40 minute dive by divers with various amounts of dive experience. The graph of these data is shown.
A)The data show a non-linear relation, with air use increasing as experience increases.
B)The data show a non-linear relation, with air use decreasing as experience increases.
C)The data show a linear relation, with air use decreasing as experience increases.
D)The data show no apparent pattern.
2
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Monique decided to climb partway up Mt. Logan during a visit to the Yukon. She recorded temperature at various altitudes. The data are shown in the graph.
A)A line of best fit is a good model for these data.
B)A line of best fit is not a good model for these data. There are not enough data points.
C)A line of best fit is not a good model for these data. The values for temperature are decreasing, not increasing.
D)A line of best fit is not a good model for these data. There is no apparent pattern.
3
Use the graph in question #2 to estimate the temperature at sea level.
A)28°C
B)26°C
C)23°C
D)21°C
4
Use the graph in question #2 to estimate the temperature at 1200 m.
A)17°C
B)16°C
C)15°C
D)14°C
5
Sketch a curve of best fit for the data shown in question #1. Use it to estimate the air used by a person on their first dive.
A)3050 PSI
B)3100 PSI
C)3150 PSI
D)3200 PSI







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