Unit 5, Lesson 4, Grade 8 icon
Unit 5, Lesson 4

More Examples of Functions

EngageNY 45 min(s)

Consider two functions we discussed in previous lessons: the function that assigns to each count of candy bags the cost of purchasing that many bags and the function that assigns to each time value between 0 and 4 seconds the distance a falling stone has dropped up to that time. If we further assume that only a whole number of bags can be sold (that one cannot purchase only a portion of a bag's contents), then we need to be more precise about our restrictions on permissible inputs for the function. Does this function require the same restrictions on its inputs as the previous problem? If a function admits only individually separate input values (like whole number counts of candy bags, for example), then we say we have a discrete function.

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