This is a free lesson from our course in Algebra I
In this lesson, you'll learn how relations can have one to many mapping. You'll also learn how to determine whether two
sets of points have one to one mapping or many to one. As you might
already know, the points with same values of y for different values of x
have many to one mapping. For example, {(0, 5), (1, 5), (2, 5), (3, 5), (4, 5)}
has many to one mapping. However, if in a set of points each x has a unique
y for it, then it's a case of one to one mapping. A function which may (but does not necessarily) associate a given member of the range of with more than one member of the domain. (More text below video...)
(Continued from above) For example, trigonometric functions such as sin x are manytoone since sin x = sin(2p+x) = sin(4p+x).
• One to One relation:
• Many to One relation:
Winpossible's online math courses and tutorials have gained rapidly popularity since
their launch in 2008. Over 100,000 students have benefited from Winpossible's courses...
these courses in conjunction with free unlimited homework help serve as a very effective
mathtutor for our students.

All of the Winpossible math tutorials have been designed by topnotch instructors
and offer a comprehensive and rigorous math review of that topic.

We guarantee that any student who studies with Winpossible, will get a firm grasp
of the associated problemsolving techniques. Each course has our instructors providing
stepbystep solutions to a wide variety of problems, completely demystifying the
problemsolving process!

Winpossible courses have been used by students for help with homework and by homeschoolers.

Several teachers use Winpossible courses at schools as a supplement for inclass
instruction. They also use our course structure to develop course worksheets.