# How do you write a vector equation and a parametric equation for each line: the line through A(3,0,4) and parallel to the x-axis?

So, the equation to the line, parallel to the x-axis through (a, b, c) is

This is itself in parametric form, with x as the parameter. Note that y

and z are constants on this line.

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Vector equation: r = (3 + at) i + 0 j + (4 + bt) k Parametric equations: x = 3 + at, y = 0, z = 4 + bt

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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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