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x1xofxaxkndx Group TitleBest ResponseYou've already chosen the best response.0
dw:1357704487717:dw
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
For a relation to be a function, each x value can be mapped to only a single y value. In a vertical line, the xcoordinate of every point is the same, so a single xvalue is mapped to every real number. That is more than a single yvalue, so it is not a function.
 one year ago

x1xofxaxkndx Group TitleBest ResponseYou've already chosen the best response.0
then it would be nobecause its only going down the x
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
An easy way to tell if a relation is a function from a graph is the vertical line test. Think of a vertical line moving from left to right on the graph. If in any position, the vertical line intersects more than one point of the relation, then the relation is not a function.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
It is not a function.
 one year ago

mathstudent55 Group TitleBest ResponseYou've already chosen the best response.0
All lines are functions except vertical lines.
 one year ago

x1xofxaxkndx Group TitleBest ResponseYou've already chosen the best response.0
thank you i got it now lol
 one year ago
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