How do you tell if a graph is a function

2 answers:

6 0

You just draw a parallel line to the y-axis. If this line intercepts MORE THAN ONE POINT, you can deduce that the graph is NOT a FUNCTION

miss Akunina [59]3 years ago

4 0

Take a vertical line and place it on thegraph. If the graph is a function, then no matter where on the graph you place the vertical line, the graphshould only cross the vertical line once.

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