17.1k views
5 votes
How to know if graph is a function

User Zwithouta
by
7.2k points

1 Answer

4 votes

Answer:

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.

Explanation:


User Sanzio Angeli
by
6.5k points