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1.) Focus (0,4) and a directrix y = -4

2.) Focus of (3,0) and a directrix of x = -3

3.) A parabola has a focus of (-2,0) and a directrix at x = 2. ( Answer the following)
- What is the vertex of the parabola?
- Is the equation in the form y= ax^2 or x = ay^2?
- What is the focal length?
- What is the equation of the parabola?

Thank you.