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OpenStudy (anonymous):
Explain how to use the vertical-line test to determine whether a relation is a function.
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OpenStudy (anonymous):
Google it OR wolfram it
OpenStudy (anonymous):
?? I did...
OpenStudy (zarkon):
draw your relation...if it is possible to draw a vertical line that crosses the graph more than once then the relation is not a function
OpenStudy (anonymous):
Said another way, imagine every possible vertical line. If any of these intersects the graph more than once, the relation fails the vertical line test, and is not a function.
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