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What is the Vertical Line Test Activity?
College Algebra Related Pages: 183 "Veritcal Line Test"
College Algebra and Trigonometry Related Pages: 183 "Veritcal Line Test"
Precalculus Related Pages: 101 "Veritcal Line Test"
Functions are well defined if only one output can be assigned to each input. In
other words, each x value (input) can have only one y value (output) associated with it
(although one y value can have more than one x value).
Graphically, this translates into a nice and easy test for functions, known as the vertical
line test.
If the curve graphed is a function, it will
pass the vertical line test meaning that any vertical line drawn on the graph will cross the function
in at most one place. If the graph passes this test then it is a function.
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