This is a free lesson from our course in Algebra I

 It covers another aspect of a function which is called one to one mapping. Overall, a function has one to one mapping if for every value of x there is one and only one value of y. For example, 2y + 3x = 6 is a function. A function has many to one mapping if more than one values of x equal to the same value of y. For example, y = f(x) = x2. The lesson will also show you the graphical representation and tabular representation of one to one mapping and many to one mapping with the help of examples. (More text below video...)
Other useful lessons:
 One to many relationship Finding the domain of function Finding the domain and range of the functions Identify if the graph is a function or not Finding the domain and range of an equation Determine domain and range from a finite set of ordered pairs
(Continued from above) Generally, types of function are:

 • One-One function:
 • Many-One function:
 • Onto function:
 • Into function:
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