Question 687923
For a relation (a set of (x,y) coordinates) to be a function, each x must correspond to only one y.<P>
In {{(-3,2),(2,-3),(3,2)(4,-3)(1,-3)}} each x has only one y, so this is a function.

<P>Hope the solution helped.  Sometimes you need more than a solution.  Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)