Describe the values for x that may not be appropriate value even when they are defined by a function A function could, for example, indicate the amount of bone strength (y) in a living human body over time in years(x) . It would not make sense to look at negative years, because the person would not yet be born.
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When considering a function that represents the amount of bone strength (y) in a living human body over time in years (x), there are certain values for x that may not be appropriate or valid.
One such example is negative years (x). Negative years on the time axis do not make sense in the context of human existence because they indicate a time period before a person is born. Therefore, it would not be appropriate or meaningful to evaluate the amount of bone strength for negative years.
To summarize, in the context of modeling bone strength over time, values of x that are less than zero (negative) would not be appropriate because they represent time before a person is born. An appropriate range for x would typically start from zero, representing the moment of birth.