Guide :High School

Please help with this! I need to discern whether or not they represent a function.

Please help with this! I need to discern whether or not they represent a function.
A function associates a value from a set (domain) one and only one value from another set. IE, from the same x value you can have only one y. So pick a ruler and scan each graph parallel to the Y axis. If you touch the blue line in two points, that's not a function. ...

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