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You use the vertical line test. If you can draw a vertical line though the graph and it intersects it only once, it is a function. If the line crosses the graphs more than once it is not.

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Q: How to tell if a graph represents a function?
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Related questions

Why f represents the graph of a function?

Because f represents a function.


When can a graph represent a function?

A graph represents a function if and only if every input generates a single output.


What can be used to determine if a graph represents a function?

If the graph is a function, no line perpendicular to the X-axis can intersect the graph at more than one point.


How do you determine if a relation represents a function?

If the function is a straight line equation that passes through the graph once, then that's a function, anything on a graph is a relation!


How can you tell if a graph is a sine function or a cosine function?

sine graph will be formed at origine of graph and cosine graph is find on y-axise


Recall that the vertical line test is used to check whether a particular graph represents the graph of a function what are correct statements for this graph?

This graph fails the vertical line test at x = 3This graph is not the graph of a function.


What is The test to determine if a graph is a function is?

A graph is represents a function if for every value x, there is at most one value of y = f(x).


How can you tell if a graph sHow is a function?

Test it by the vertical line test. That is, if a vertical line passes through the two points of the graph, this graph is not the graph of a function.


Which graph best represents a logarithmic function?

an exponential function flipped over the line y=x


How can you tell if a graph that represents the relationship is a function?

The vertical line test! Imagine a vertical line going through all points of the graph. As long as the vertical line only touches the graphed line once, it's a function. If it touches more than once, it is not.


How can you tell if a graph is a continuous function or a discrete function?

The graph of a continuous function will not have any 'breaks' or 'gaps' in it. You can draw it without lifting your pencil or pen. The graph of a discrete function will just be a set of lines.


Which of these data sets represents a function?

Does the graph above show a relation, a function, both a relation and a function, or neither a relation nor a function?