Question 1191135
**a) Number of days since your birth paired with your age in years:**

This situation *can* be represented by a one-to-one function.  Each number of days since your birth corresponds to exactly one age in years, and each age in years (within the range of a human lifespan) corresponds to exactly one number of days since your birth.

* **Inverse Function Description:** The inverse function would pair your age in years with the number of days since your birth.

**b) Speed of your car in miles per hour paired with the speed in kilometers per hour:**

This situation *can* be represented by a one-to-one function.  There's a direct conversion between miles per hour and kilometers per hour (approximately 1 mile per hour = 1.609 kilometers per hour).  Every speed in miles per hour corresponds to one and only one speed in kilometers per hour, and vice-versa.

* **Inverse Function Description:** The inverse function would pair the speed of your car in kilometers per hour with the speed in miles per hour.