What is the Correct Method for Evaluating Limits?

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SUMMARY

The correct method for evaluating limits involves substituting values directly into the function and simplifying the expression. In the discussion, the user attempted to evaluate the limit by substituting -4 into the expression but made calculation errors. The correct evaluation of the limit should yield a value of -6.25 when substituting -4 into the expression (6 * -4 - 1) / (3 + 1). Ensuring accurate calculations is crucial for obtaining the correct limit value.

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Homework Statement


http://img517.imageshack.us/img517/5817/96728501it3.jpg



The Attempt at a Solution


I plugged in the values 1 and -4 and got

6(-4)-1 / 3+1

equals -7.333. But got the question wrong. What am I doing wrong?
 
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(6*-4 - 1)/4= - 6.25
 
Must of put it into my calculator wrong..Thanks
 

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