# What is the equation of the line tangent to #f(x)=9x^2 - 28x - 34 # at #x=-1#?

graph{(-64x+67-y)(9x^2-28x-34-y)=0 [-160, 160, -80, 80]}

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The equation of the line tangent to f(x)=9x^2 - 28x - 34 at x=-1 is y = -5x - 20.

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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.

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