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-- If you know the general shape of a graph, and you can quickly determine the

x- and y-intercepts, that's often enough information to make a pretty accurate

sketch of the graph.

-- In particular, if the equation is a linear one, then you know the graph will be

a straight line; and then, as soon as you know the x- and y-intercepts, just draw

the line between them and you don't need anything else ... that's your graph.

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Q: What is the importance of x and y intercepts?
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