When you buy your favorite type of chocolate you are charged by how much you want. The cost is therefore a function, because it depends on the number of ounces of chocolate you buy. That is, for each input (weight in ounces), there is one output (cost, say in dollars).
By contrast the price of a house is not a function of the lot size on which a house is built because houses on the same size lot may sell for many different prices.
- Describe an everyday situation between variables that is a function. Clearly explain why the relationship a function.
- Describe an everyday situation between variables that is not a function. Clearly explain why the relationship is not a function.
To complete the discussion:
Post a thorough response to the main questions above.
1) If no one else has done so yet, you may disagree with one of your peer's example (on whether the given example is a function or not), and clearly explain why
or
2.) If the function example is correct and no one else has yet done so, re-state it the other way and explain if it's still a function. (E.g., cost is a function of the number of ounces of chocolate. Is the number of ounces of chocolate a function of the cost? Why or why not?).