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Mathematics 7 Online
OpenStudy (anonymous):

To determine if the graph of a relation is a function, you could use the ____________ test domain, range, function, vertical line

OpenStudy (anonymous):

vertical line test!

OpenStudy (ash2326):

If a line is drawn parallel to y-axis and moved along the x-axis. If the line cuts the graph only once at each x then it's a function else a relation

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