How to use direct substitution to evaluate the limit

The video tutorial explains how to evaluate the limit of a function G of X as X approaches one. It begins with a discussion on the concept of limits and the importance of understanding the graph of the function. The teacher uses a hypothetical graph to illustrate the process. The tutorial then introduces the direct substitution method as the simplest way to evaluate limits, demonstrating the calculation step-by-step. The example used involves substituting X with 1 in the function, leading to a final result of -1.

What does the graph look like when evaluating the limit as X approaches one?

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Describe the significance of having coordinate points from the left and right when evaluating limits.

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