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teejay
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How do you find the domain and range of a graph?
teejay said:How do you find the domain and range of a graph?
Domain refers to the set of input or x-values of a function or relation, while range refers to the set of output or y-values. In simpler terms, the domain is all the possible values of the independent variable, while the range is all the possible values of the dependent variable.
To find the domain of a graph, look at the x-values shown on the graph. The domain will be all the possible values of x. To find the range, look at the y-values shown on the graph. The range will be all the possible values of y.
Yes, the domain and range of a graph can be infinite if the graph continues indefinitely in either the x or y direction. For example, a straight line with no endpoints has an infinite domain and range.
The domain and range can be represented in various ways, such as using a table, a set of ordered pairs, or a mapping diagram. You can also write the domain and range using interval notation, where square brackets indicate inclusive values and parentheses indicate exclusive values.
Identifying the domain and range of a graph is important because it helps us understand the behavior of a function or relation. It also allows us to determine the maximum and minimum values of a function and helps us identify any restrictions or limitations of the graph.