Math
posted by Emily .
Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!!
1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION)
2 A rock that is projected upward from ground level with an initial velocity of 90 feet per second. (LINEAR FUNCTION)
3.The total charges, T, of an auto mechanic and the number of hours, H, that he worked. (LINEAR FUNCTION)
4.The height of a dog jumping off a dock into a pond. (NOT A LINEAR FUNCTION)
5. The amount of water being drained from a reservoir at a rate of 200 gallons per minute (LINEAR FUNCTION)

1 correct
2. depends on what the function is, and the independent variable, The wording is very poor. Height as a function of time is not linear.
3. correct
4. correct
5. if the rate keeps constant, amount is a linear function of time.