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Average Rate of Change and Secant Slopes
Grade Level
Calculus I
CAL1.13 Average Rate of Change and Secant Slopes
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A secant line intersects the graph of temperature change model C(t) at (-2, 18) and (4, -6). Which choice gives the secant slope and the correct interpretation with units?
A
4 degrees Celsius per minute; temperature change model C(t) increases by 4 degrees Celsius per minute on average from t = -2 to t = 4.
B
-4 degrees Celsius per minute; temperature change model C(t) decreases by 4 degrees Celsius per minute on average from t = -2 to t = 4.
C
-24 degrees Celsius per minute; temperature change model C(t) decreases by 24 degrees Celsius per minute on average from t = -2 to t = 4.
D
24 degrees Celsius per minute; temperature change model C(t) increases by 24 degrees Celsius per minute on average from t = -2 to t = 4.
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