When we first encountered Domain and Range, we used inequalities to represent the values for which x and y could be.Īn inequality allows us to compare two expressions by indicating one is greater than, greater than or equal to, less than, or less than or equal to, another. So how do we represent a functions Domain and Range?
In other words, we can represent our function in terms of its Domain and Range. If we know what values to plug in for x, then we can understand the entirety of our function (equation). It means that a function is an equation where each and every x value is different and doesn’t repeat. Trigonometry is the branch of mathematics that deals with the relationship between the sides and angles of triangles, as well as relations and functions.Ĭonsider the Distance Formula and the Pythagorean Theorem.īoth allow us to find the distance between two points and are equally useful in our study of triangles and functions.Ī function is a relation (set of ordered pairs) where no two orders pairs have the same first element.
In addition, you’re going to see how it’s used to represent the domain and range of a function in a simplified and beautiful way. In today’s lesson you’re going learn how to write in interval notation.
