# How to know if a line is a function

One of the most important skills that students need to learn is How to know if a line is a function.

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## Vertical Line Test

First, see if the line has a defined domain and range. If so, then the line is probably a function. Another way to tell is by graphing the line. If the line passes the vertical line test, then it is

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## Vertical Line Test

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To determine what the math problem is, you will need to take a close look at the information given and use your problem-solving skills. Once you have determined what the problem is, you can begin to work on finding the solution.

## Vertical line test

Answer: A method to distinguish functions from relations. The vertical Line test. is a way to determine if a relation is a function . states that if a vertical line intersects the graph of the relation more than once, then the relation is a NOT a

## Vertical Line Test

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