What is the perpendicular slope of 3?
Perpendicular slopes are opposite reciprocals of each other.
Opposites: negative versus positive
3 is a positive number; therefore, its perpendicular slope must be negative
Reciprocals: multiplicative inverse (the two reciprocals must multiply to 1)
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The perpendicular slope of 3 is -1/3.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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- Are there more than one "line of best fits"?

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