A function is a special relationship between values, each of its input values gives back exactly one output value.

  • A function is a special relationship between values, each of its input values gives back exactly one output value.

     

    Situations where two variables in everyday life that can be served as a function are:

    1. Voltage depends on resistance and current

    2. Test marks depend on certain attitude, when listening to a certain lecture or doing tutorials.

     

    Other relations between two variables in everyday life cannot be described as a function is:

    1.My own telephone number, because although I’m one person, I have several telephone numbers. These different telephone numbers could be cell, work, home, etc

    2. Another relation that cannot be a function is money vs. time.

     

    QUESTION 1 (200 WORDS)

  • For people filing a single return, federal income tax is a function of adjusted gross income, because for each value of adjusted gross income, there is a specific tax to be paid. By contrast, the price of a house is not a function of the lot size on which the house sits because houses on same-sized lots can sell for many different prices.
    • What other situations between two variables in everyday life can be described as a function?
    • What other relations between two variables in everyday life cannot be described as a function?

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