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Mathematics 10 Online
OpenStudy (anonymous):

What is the vertical and horizontal line test? Can I have an example, please?

jimthompson5910 (jim_thompson5910):

Here's a graph of a function |dw:1349137758123:dw|

jimthompson5910 (jim_thompson5910):

It is a function since it passes the vertical line test. Basically every possible vertical line only passes through the graph at one point.

jimthompson5910 (jim_thompson5910):

However, it fails the horizontal line test since it's possible to draw a horizontal line that passes through more than one point |dw:1349137856358:dw|

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