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**Answer:**

**the vertex is at (0,0) **

**the focus is at (0, -10) **

**the directrix is y = 10 **

**the focal width = |-40| = 40 **

**Step-by-step explanation:**

The equation of the parabola :

Which shows that the given parabola is a vertical parabola and the standard form of the vertical parabola is written as :

the vertex is at (h,k)

the focus is at (h,k+p)

the directrix is y = k−p

the focal width = |4p|

So, changing the given equation of parabola into standard form we get :

On comparing it with equation (1) we get

p = -10 , h = 0 , k = 0

**Therefore, the vertex is at (0,0) **

**the focus is at (0, -10) **

**the directrix is y = 10 **

**the focal width = |-40| = 40 **

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