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Suzy
Mathematics
23 July, 05:26
How to know if graph is a function
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Alison Allison
23 July, 05:41
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To use the vertical line test, take a ruler or other straight edge and draw a line parallel to the y-axis for any chosen value of x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function.
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