# Write the equation given the vertex is (-1,4) and the directrix line is x=1. help please?

The equation of parabola is

The vertex lies halfway between the directrix and the focus.

of the vertex, causing the parabola to open left. The horizontal equation

left parabola opening is

y^2+8 x -8 y +24=0 [-45, 45, -22.5, 22.5]}[Ans]

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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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