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x1xofxaxkndxBest ResponseYou've already chosen the best response.0
dw:1357704487717:dw
 one year ago

mathstudent55Best 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

x1xofxaxkndxBest ResponseYou've already chosen the best response.0
then it would be nobecause its only going down the x
 one year ago

mathstudent55Best 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

mathstudent55Best ResponseYou've already chosen the best response.0
It is not a function.
 one year ago

mathstudent55Best ResponseYou've already chosen the best response.0
All lines are functions except vertical lines.
 one year ago

x1xofxaxkndxBest ResponseYou've already chosen the best response.0
thank you i got it now lol
 one year ago
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