Question: What is the Normal & Tangent Line?

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What is a Tangent Line?
When we take the derivative of a function at a certain point this gives the derivative of a function at a certain point this gives the slope of the line tangent to the functions graph at that point. 

​​What is a Normal Line?
The normal line is the line perpendicular to the tangent line. To find the normal line, we take the negative reciprocal of the slope of the tangent line. 

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Video 2 of 3:

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Answers and explanation to the workout problems:

Video 3 of 3:

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