Several factors can be responsible, including: 1  Heredity: If your dad had oily hair, chances are you will, too. 2  Hormonal fluctuations: In adult women, it may come with the menstrual cycle or using birth control pills. 3  Bulking up: Excessive oil is a side effect of using androgenic hormones to increase body mass.
At first glance, a function looks just like a relation. 1  It's a set of ordered pairs such as { (0,1) , (5, 22), (11,9) }. 2  Like a relation, a function has a domain and range made up of the x and y values of ordered pairs.
The thing that. makes a function machine special is that for each input you get exactly one output. Over the next. three units, weâll look at several types of functions. Our goal will be to study the relationship. between the function, its equation and its graph. Remember, the reason for graphs is that any. point that is on the graph will satisfy the function and any point that is not on the graph will not. make the functionâs equation true.